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# Name two objects with acute angles

### What is Acute Angle? - Definition, Facts & Exampl

An acute angle is an angle that measures less than 90 degrees. ∠ABC measures 30 ̊and hence it is an acute angle A triangle formed by all angles measuring less than 90˚ is also known as an acute triangle. For example, in an equilateral triangle, all three angles measure 60˚, making it an acute triangle When a triangle has three vertices that all form acute angles, it is known as an acute triangle. For example, an acute triangle could have an 80-degree angle, a 55-degree angle and a 45-degree angle. All acute angles have a complement, and collectively they add up to 90 degrees mostly the irregular polygons have more acute angles. acute angles are less than 90 degrees so you could measure with an angle ruler or a protractor.ANSWERa staplerANSWERAn open safety pin What is..

Which Angle? Remember to look carefully at which angle you are being asked to name: The acute angle is the small angle which is less than 90°. If you choose the larger angle you. will have a Reflex Angle instead: The smaller angle is an Acute Angle, but the larger angle is a Reflex Angle Parts of an Angle. The corner point of an angle is called the vertex. And the two straight sides are called arms. The angle is the amount of turn between each arm. How to Label Angles. There are two main ways to label angles: 1. give the angle a name, usually a lower-case letter like a or b, or sometimes a Greek letter like α (alpha) or θ (theta Types of Angles. 1. Acute Angle. An angle which measures less than 90° is called an acute angle. The measure between 0° to 90°. In the picture below, the angle formed by the intersection of PQ and QR at Q forms an angle PQR which measures 45°. Thus, PQR is called an acute angle. 2

### What Are Some Examples of Acute Angles Found in Real Life

1. Name an angle pair that satisfies each condition. two acute vertical angles The object and its image are two nonadjacent angles formed by two intersecting lines. So they are another way using an acute angle and two of the four directions: north, south, east, and west. Explain your reasoning
2. The simplest way to sort triangles is by their angle size: Acute triangle: An acute triangle is one in which all the angles are acute (less than 90°).; Obtuse triangle: An obtuse triangle is one in which one of the angles is obtuse (more than 90°).; Right triangle: A right triangle is one in which one of the angles is a right angle (exactly 90°).; It is not hard to see that every triangle.
3. The names of basic angles are Acute angle, Obtuse angle, Right angle, Straight angle, reflex angle and full rotation. An angle is geometrical shape formed by joining two rays at their end-points. An angle is usually measured in degrees. There are various types of angles in geometry. Angles form the core part of the geometry in mathematics
4. What are objects that have a right angle, an acute angle, and an obtuse angle? A triangle, if it has a right angle also has two acute angles. A triangle with an obtuse angle also has two acute angles. 35 view
5. If the other angle is smaller than the right angle, it is an acute angle.If the other angle is the same as the right angle, it is a right angle.If the other angle is bigger than the right angle.
6. Obtuse angles are seen on most house rooftops, as the two roof surfaces slope down from it. Other real world examples of an obtuse angle include the angle between the screen and the base of an opened laptop, a hockey stick, an accordion hand fan and between the wings of a boomerang
7. Name two objects with right angle - 13296589 wilmapogs wilmapogs 13.04.2021 Math Senior High School answered Name two objects with right angle 2 See answers jhonicaaquino43 jhonicaaquino43 Answer: Answer: We can see right angles in the corners of a room, book, cube, windows and kite

Angles are named in two ways. You can name a specific angle by using the vertex point, and a point on each of the angle's rays. The name of the angle is simply the three letters representing those points, with the vertex point listed in the middle. You can also name angles by looking at their size. Right angles are 90 degrees. Acute angles are. Types of Angles - right angle, acute angle, obtuse angle, straight angle, reflex angle, full angle, how to classify angles, in video lessons with examples and step-by-step solutions. A right angle is an angle measuring 90 degrees. Two lines or line segments that meet at a right angle are said to be perpendicular The basic types of angles are straight, right, acute and obtuse. Obtuse, which also means blunt, angles are anything in between a straight angle (180°) and a right angle (90°). They are found in many real-life objects around you Name the vertex and sides of each angle. 1) N L M 2) C E D 3) Q S R 4) U S T Name each angle in four ways. 5) E C 3 D 6) E G F 4 7) G E F 1 8) H J 3 I Draw and label an angle to fit each description. 9) an obtuse angle, Y 10) an acute angle, JIH 11) a right angle, 3 12) a straight angle, CD

### What home objects have acute angles? - Answer

Isosceles Triangle: A triangle with two sides of equal length is an isosceles triangle. Scalene Triangle: A scalene triangle is the one with all unequal sides. On the basis of the measure of angles, triangles are of following types: Acute-angled Triangle: A triangle in which each angle is acute (less than 90°) is an acute-angled triangle A triangle with 3 acute angles (3 angles measuring between 0° and 90°). Obtuse Triangle . A triangle has two angles that measure 35° and 75°. Find the measure of the third angle. you can use triangles to find unknown distances between locations or objects Acute Angle Formulas . In an acute triangle, the following is true for the length of the sides: a 2 + b 2 > c 2, b 2 + c 2 > a 2, c 2 + a 2 > b 2. If C is the greatest angle and h c is the altitude from vertex C, then the following relation for altitude is true for an acute triangle: 1/h c 2 < 1/a 2 + 1/b 2. For an acute tirangle with angles A.

### Acute Angles - mathsisfun

• Name two acute adjacent angles 1 See answer almightycouch is waiting for your help. Add your answer and earn points. Brainly User Brainly User Answer: Two angles are Adjacent when they have a common side and a common vertex (corner point) and don't overlap. Because: they have a common side (line CB) they have a common vertex (point B).
• You can name the plane several ways: K is the single letter designated as the plane's name. Also any three letters in a plane can be used to name the plane such as plane MNP, plane MPN, plane PMN, plane PNM, plane NPM, and plane NMP. Example 3: Refer to the 3-dimensional diagram to answer the questions. A. a) Name a plane that contains point S
• An acute angle. Even we make different angles in different postures while doing yoga and exercises. Solved Examples for You. Question 1: Name the angle when the time in a clock is 3: 40 pm? Is it Obtuse or Reflex or Acute Angle? Answer: The angle is measured in an anti-clockwise manner and thus the angle formed is reflex and not obtuse or acute.
• Label an angle using the vertex and a point from each arm. ∠ ABC or ∠ CBA. Note: The vertex should go between the two points. Label an angle using only the vertex. ∠ B. Note: When two or more angles share the same vertex, we don't use only the vertex to name the angles. Label an angle using number
• 11,146 acute angle stock photos, vectors, and illustrations are available royalty-free. See acute angle stock video clips. of 112. maths angles british garden july mathematics angles angles geometry angles in math angle illustration angle geometry measuring angle outdoor installation art regent's park. Try these curated collections
• Solved Examples on Angles. Example 1: Identify the type angles for each given figure. Solution: a) Angle form is 40°. It is an acute angle as its measure is less than 90 degrees. b) Angle form is 117°. It is an obtuse angle as its measure is greater than 90 degrees but less than 180 degrees. c) Angle form is 121°
• Right angles are like corners and measure 90°. Acute angles are smaller than 90°. Obtuse angles are larger than 90°, but less than 180°. And straight angles are 180°, which is where the two.

### Angles - Acute, Obtuse, Straight and Righ

1. A rhombus is a quadrilateral which has four sides. The opposite angles of a rhombus are congruent to each other. A rhombus has two congruent opposite acute angles and two congruent opposite obtuse angles. The sum of two consecutive internal angles is supplementary
2. The letter K and a diamond-shaped kite contain two acute angles, and each tip of a football is an acute triangle. On the Road. Modern architectural structures contain an acute angles that add interest and varied shapes. A yield sign contains three acute angles and an exit ramp creates an acute angle as it swerves from the highway
3. What objects have an acute angle? A scalene triangle could have three acute angles, one right angle and two acute angles, or one obtuse angle and two acute angles
4. 1. Name two acute vertical angles. 2. Name two obtuse vertical angles. 3. Name a linear pair. 4. Name two acute adjacent angles. 5. Name an angle complementary to ∠EKH. 6. Name an angle supplementary to ∠FKG. 7. Find the measures of an angle and its complement if one angle measures 24 degrees more than the other. 8
5. Yes, an obtuse triangle can have two congruent angles, where for the obtuse angle measuring A degrees, each of the two other angles measures (180-A)/2. Does an acute triangle have obtuse angles
6. † draw and measure various angles † name various types of angles † construct various figures GLOSSARY acute angle - angle less than 90o angle - formed by two rays sharing an endpoint degree - the unit of measurement used to measure the size of angles equilateral triangle - triangle with three equal sides and angles isosceles triangle.
7. Acute angles. Angles that are smaller than 90°. 90 degree angles get their own special name - they are known as right angles. They also get their own special angle symbol - instead of drawing a curved line to indicate the angle, you draw a little box like this: but two angles. Complementary angles add up to 90°

### Types of Angles - Acute, Right, Obtuse, Straight and

Make headway with our acute, right, and obtuse angles worksheets that help familiarize children with the three types of angles with a variety of exercises like determining the types of angles visually, counting the angles of each type, matching angles to the measures and figures, identifying angles formed by the hands of a clock, comprehending angles with real-life objects, identifying angles. Egyptian pyramids got their name from geometry and the biggest building in Washington is the Pentagon, a structure that has five sides. Plane Figures and Shapes . A plane is a flat surface like the top of a table. Plane geometry is also called two-dimensional geometry. Lines and Angles . The simplest objects in geometry are lines and angles

Name two acute vertical angles. 11. Name two obtuse vertical angles. 12. Name a pair of adjacent angles 13. Name a linear pair. 14. Name a pair of complementary angles. Geometry Worksheet 15. Share this link with a friend: Copied! Students who viewed this also studied Glossary and Terms: Angles. Acute angle - Any angle smaller than 90°. Adjacent angles - Adjacent angles are two angles that share a common vertex and one common side. They do not overlap. In the picture to the right, angles ∠cad and ∠cab are adjacent angles. Adjoining - When two objects share a common boundary, they are said to be adjoining Acute Angle: is less than 90° Angles are named in two ways. You can name a specific angle by using the vertex point, and a point on each of the angle's rays. The name of the angle is simply the three letters representing those points, When we say 'the angle ABC' we mean the actual angle object Acute Angle: An angle that measures less than 90° is called an acute angle.In other words, it lies between 0° to 90°. Right Angle: An angle that measures exactly 90° is called a right angle.It is formed when two sides of an angle are perpendicular to each other. The sign of a right angle can also be shown using a quarter circle along with the standard sign as shown in the figure All three angles are acute. Lesson Summary. An acute angle is any angle smaller than 90 degrees. A right angle is an angle that measures 90 degrees. It doesn't matter how much smaller the angle is. The two shapes at the right are placed together as shown. Two angle measures are given: 1088 and 558. Since there are no gaps and no overlaps between the shapes, you can add the two angle measures together to find the measure of the larger angle formed by the two angles in the shapes. 1088 1 558 5 1638 The larger combined angle measures 1638 Two acute angles of a right-angled triangle are complementary. Complementary Angles v/s Supplementary Angles. The supplementary and complementary angles are angles that exist in pairs, summing up to 180 and 90 degrees, and have numerous real-time applications, most common being the crossroads. Let's have a look at the difference between them Name each angle in three ways. 1. 2. Use the ﬁgure at the right. Name the indicated angle in two different ways. 3. &1 lABC, lCBA 4. &2 Draw and label a ﬁgure to ﬁt each description. 5. an obtuse angle, &RST 6. an acute acute, &BCD 7. a straight angle, &EFG 8. a right angle, &GHI Use a protractor. Measure and classify each angle. 9. 10 Name two acute vertical angles. WUT, VUX 12. Name two obtuse vertical angles. WUV, XUT 13. Name a pair of complementary adjacent angles. 14. Name a pair of complementary nonadjacent angles. 15. Name a linear pair whose vertex is T. WTY, WTU 16. Name an angle supplementary to UVZ. UVX 17. Rays PQ and QR are perpendicular. Point S lies in the. In a rhombus, opposite angles are congruent to each other. And also A rhombus has two opposite acute angles and two opposite obtuse angles. The sum of two consecutive internal angles is supplementary i.e 180 0. It means that if an acute angle and obtuse angle is added, its sum is 180 0. Obtuse Angle of a Parallelogram (image will be uploaded.

Trig Chapter 8 Definitions. two acute angles are called this if their sum is a right angle. Functions sine and cosine, tan and cot, and sec and cos are cofunctions of each other. means to find the missing lengths of its sides and the measurements of its angles. a celiometer consists of this that directs a vertical light beam up to the cloud. An acute triangle (or acute-angled triangle) is a triangle with three acute angles (less than 90°). An obtuse triangle (or obtuse-angled triangle) is a triangle with one obtuse angle (greater than 90°) and two acute angles. Since a triangle's angles must sum to 180° in Euclidean geometry, no Euclidean triangle can have more than one obtuse angle.. Acute and obtuse triangles are the two. Judging by appearance, name an acute angle, an obtuse angle, and a right angle 1 See answer brianamarie956 is waiting for your help. Add your answer and earn points. 2 minutes ago An object is moving at a speed of 920 yards every 3.5 hours Express the speed in miles per week

Name the vertex and sides of each angle. 1) L Name Date Period 2) E D C. N M. 3) 4) R T. S U. Q S. Name each angle in four ways. 5) 6) F C. 4 . E. 3 G. D E. 7) 8) F G J. 1 . 3 . I E. H. Draw and label an angle to fit each description. 9) an obtuse ang le, ∠ Y 10) an acute angle, ∠ JIH. 11) a rig ht ang le, ∠ 3 12) a straight angle, ∠. which side is perpendicular to side BC so BC is this line segment right over here and for another segment to be perpendicular to it perpendicular just means that the two segments need to intersect at a right angle or at a 90 degree angle and we see that BC intersects a B at a 90 degree angle the symbol right over here represents a 90 degree or a right angle so we just have to find side a B or. Types of angles: How to name a pairs of angles. Adjacent angles: Angle with a common vertex and one common side. <1 and <2, are adjacent angles. Complementary angles: Two angles whose measures add to 90 degrees. Angle 1 and angle 2 are complementary angles because together they form a right angle An object thrown into the space either horizontally or at an acute angle under the action of gravity is called a projectile. Name the two forces which act on a projectile. i) Gravitational force.

Subtract sum of known angles from 180°. 180° − 125° = 55° Answer: The size of the third angle is 55° Acute Triangles. An acute triangle is a triangle whose angles are all acute (i.e. less than 90°). In the acute triangle shown below, ∠a, ∠b and ∠c are all acute angles. Example 1: A triangle has angles 46°, 63° and 71° The Obtuse Triangle has an obtuse angle (an obtuse angle has more than 90°). In the picture on the left, the shaded angle is the obtuse angle that distinguishes this triangle. Since the total degrees in any triangle is 180°, an obtuse triangle can only have one angle that measures more than 90°

• attribute any characteristic of an object or shape, such as number of sides or angles, lengths of sides, or angle measures. • category a collection of objects grouped together based on attributes they have in common. • hierarchy a ranking of categories based on attributes. • polygon a two-dimensional close Types of Angles WorksheetStudents will learn how to classify 4 types of angles (Straight, Acute, Right Obtuse) through familiar objects and environment around them or even using their body to make angles. INCLUDE- Flash cards 4 types of angles- Classify Angles exercise via objects and polygon.- 2. Subjects

Learn geometry angle with free interactive flashcards. Choose from 500 different sets of geometry angle flashcards on Quizlet Drawing Angles. Help your child's drawing-angles skill catch up and keep up to its grade level with these pdfs. The acute angle is less than 90°, the right angle is equal to 90°, and the obtuse angle is greater than 90° but less than 180°, and the straight angle is exactly 180°

these centers are located at the obtuse angle corners of the isometric square. Using the radius R, with centers at K1 and K2 draw the two big arcs for the isocircle as shown in Step 3 of Fig. 9.5. Step 4: Locate the centers of the small arcs of the isocircle Draw the diagonal K3-K4 between the acute angle corners of the square in Fig. 9. 5 let's do a couple of examples dealing with angles between parallel lines and transversals so let's say that these two lines are parallel so I can label as being parallel that tells us that they will never intersect and they're sitting in the same plane and let's say I have a transversal right here which is just a line that will intersect both of those parallel lines and I were to tell you I. 5. Which of the following is not an acute angle? The correct answer is: D. 120⁰. Acute angles are less than 90⁰. 6. In this parallelogram, how many angles are smaller than a right angle? The correct answer is: B. Two. The other two angles are larger than a right angle. 7. In a regular hexagon, how many angles are larger than a right angle Classify each angle as right, acute or obtuse. Lines, angles and shapes - angles An angle is the amount of turning between two lines that meet. There are three classifications of angles depending on their size. 1 2 A right angle is 90° (degrees). An acute angle is smaller than a right angle. An obtuse angle is larger than a right angle. a d.

Trace at least two of each, label with points, and then name them in the table below the painting. acute angle obtuse angle right angle C ÞoCa Use right angles to determine whether angles are equal to, greater than, or less than right angles. Draw right, obtuse, and acute angles. 11/4/13 Lesson 2: Date: 4.A.30 COMMON COREU 2013 Common Core, Inc A line is a straight path extending infinitely in both directions. An angle is formed by the intersection of two line segments, rays, and/or lines. Types of Angles. An acute angle is an angle with a measure less than 90°. An obtuse angle is an angle with a measure greater than 90°. A right angle is an angle with a measure of 90°. Types of Lines Chapters 23-25: Angle, transformations, symmetry and classifying shapes. Pupils should be taught to: Year 1 . describe position, directions and movements, including whole, half, quarter and three-quarter turns. recognize and name common 2-D and 3-D shapes, including: 2-D shapes [e.g., rectangles (including squares), circles and triangles Types of Triangles - Explanation & Examples. In Geometry, a triangle is the most important shape, defined as a closed two-dimensional diagram containing 3 sides, 3 angles, and 3 vertices.In simple words, a triangle is a polygon with 3 sides. The word triangle is taken from the Latin word 'triangulus,' which means three-cornered The two lines are parallel and do not intersect each other. They can never be perpendicular to each other. The two lines are intersecting each other at an acute angle. So, they are not perpendicular. The lines are not intersecting each other at right angles

Start over with two of your objects and this time, concentrate on making an acute (less than 90°) angle out of them. Use the other two objects to connect the original two, up and to the right, to make your four-sided (quadrilateral), plane figure --a rhombus. Look at the bottom left angle and the top right angle. They are the same. They are. Angles Worksheets. Explore this printable angles worksheet package for free and learn to identify, name and classify angles with a variety of exercises like identifying the parts of an angle, naming angles and distinguishing between the interior and exterior points. Gain practice in identifying the types of angles as a prelude to the huge. Right Angles measure 90 degrees. Acute Angles measure less than 90 degrees. Obtuse Angles measure more than 90 degrees but less that 180 degrees. Straight Angles measure exactly 180 degrees. Classifying Angles Name a right angle. Name two acute angles. Name two obtuse angles. Name a pair of complementary angles. Name a pair of supplementary angles The Relationships Among the Variables of Motion For Two Objects, One at One End and the Other at the Other . End, of an always-taut, Unstretchable String. Consider the following diagram. Because they are connected together by a string of fixed length, if object \(1\) goes downward \(5 cm\), then object \(2\) must go rightward \(5 cm\) Identify all the angles of the following geometrical shapes. Mark them as acute angle, right angle and obtuse angle. asked Jul 19 in Geometry by Raghab01 ( 50.7k points

As students find angles, take a marker and highlight at least one angle of each type (acute, right, obtuse, and straight). Draw the marker lines over the angles in the image and identify each one, such as shown below. Here is an example of an angle in this image: Ask students if they can identify or name this type of angle. It is an acute angle Acute, Right, and Obtuse Angles. Spark interest and encourage children to identify acute, right, and obtuse angles with a bunch of fun-filled exercises like recognizing angles in a clock, angle types in real-life objects, and a lot more! Classifying Angles

### Squares, Rectangles, Parallelograms and Other Polygons

2. If an angle is supplementary to an obtuse angle, then it is acute. If an angle is acute, then its measure is less than 90. 3. If the measure of ∠A is less than 90, then ∠A is acute. If ∠A is acute, then ∠A # ∠B. 4. If an angle is a right angle, then the measure of the angle is 90. If two lines are perpendicular, then they form a. Obj.: Name, measure, and classify angles. Key Vocabulary • Angle - An angle consists of two different rays with the same endpoint. • Sides, vertex of an angle - The rays are the sides of the angle. The endpoint is the vertex of the angle. • Measure of an angle - A protractor can be used to approximate the measure of an angle

### Types of Angles (Acute, Obtuse, Right, Straight, Reflex

Name all the right angles, acute angles, and obtuse angles. b. Which pairs of angles do you think are adjacent? Explain. 2 ACTIVITY: Naming Angles point on one side point on other side vertex Oakmont Rd 832 832 Justify Conclusions When you name an angle, does the order in which you write the letters matter? Explain. Math Practic Name two acute vertical angles. 11. Name two obtuse vertical angles. 12. Name a pair of adjacent angles 13. Name an obtuse angle. 14. Name a pair of complementary angles. 15. Name an angle supplementary to FG what quadrilateral has 2 acute angles and 2 obtuse angles and 2 pair of parallel sife was asked on May 31 2017. View the answer now a. Acute angle . b. Right angle . c. Obtuse angle . Lesson 2: 7Use right angles to determine whether angles are equal to, greater than, or less than right angles. Draw right, obtuse, and acute angles. A STORY OF UNITS This work is derived from Eureka Math ™ and licensed by Great Minds. ©2015 Great Minds. eureka-math.org G4-M4-SE-1.3.-05.201 Types of Triangles - Cool Math has free online cool math lessons, cool math games and fun math activities. Really clear math lessons (pre-algebra, algebra, precalculus), cool math games, online graphing calculators, geometry art, fractals, polyhedra, parents and teachers areas too ### What objects are obtuse angles? - Quor

1. 3. The name for the angle below is < T. state Two (2) other ways in which we can name this angle. (a) _____ (b) _____ 4. Which of the following angles is less than 5. Study the shapes below then, write TRUE or FALSE next to each statement. (a) Shape A has 2 acute angles and 1 right angle
2. Similar triangles. Two triangles, ABC and A′B′C′, are similar if and only if corresponding angles have the same measure: this implies that they are similar if and only if the lengths of corresponding sides are proportional. It can be shown that two triangles having congruent angles (equiangular triangles) are similar, that is, the corresponding sides can be proved to be proportional
3. have at least two acute angles. An acute triangle has three acute angles. A right triangle has one right angle and two acute angles. An obtuse triangle has one obtuse angle and two acute angles. 3 3__ 4 __1 25 6 8 25 6 8 3 __3 5 __4 9 160˚ 235˚ 182 UNIT 8 LESSON 4 Name Triangle
4. Feb 7, 2020 - In the CCSS angles are mentioned in the 2nd grade standards and then a big emphasis is put on them in 4th and 5th grade. See more ideas about math classroom, math geometry, teaching math

### What home objects have a right angle? - Answer

Similarly, a triangle can never be a right angle and an obtuse angle at the same time as per the angle sum property of a triangle. Thus, we can conclude that if one of the angles of a triangle is obtuse, then the other two angles of a triangle must be acute angles. The triangles above have one angle greater than 90° Use the vocabulary cards for the words obtuse angle, acute angles, and right angles as visual aids and ask students to create angles with their arms as you say the name of the angle. (Tip: you can use an analog clock and move the hand to create the angles you say aloud.) Explain that you can see angles in many everyday objects that support. You can name an angle by the vertex. When you name an angle using 3 points, the vertex is always the point in the middle. Angles are classified by the size of the opening between the rays. A right angle forms a square corner. A straight angle forms a line. An acute angle is less than a right angle. An obtuse angle is greater than a right angle. 2. Use your right angle template to identify acute, obtuse, and right angles within this painting. Trace at least two of each, label with points, and then name them in the table below the painting. Acute angle Obtuse angle Right angle Lesson 2: Use right angles to determine whether angles are equal to, greater than, or less than right angles Awesome Angles Angle Name Right Angle: This looks like the letter 'L' and is 90 degrees wide. Acute Angle: Any angle smaller than a right angle. It is less than 90 degrees. Obtuse Angle: Any angle

### What Are Some Real World Examples of an Obtuse Angle

1. Ask students to find objects or things in the classroom that have right, acute, obtuse, or straight angles. Complete the following by filling the term that makes the statement true: _____angles have a measure greater than 90 degrees, ______angles have a measure of 90 degrees, and _______ angles have a measure of less than 90 degrees
2. 35. \$0.99. Zip. Acute, obtuse and right angles (measuring angles) worksheets (3 levels) This is a zipped folder containing a PDF version and an editable version of worksheets on acute, obtuse and right angles (and measuring angles) described below: Lower ability - identify angles as acute, right or obtuse Middle
3. 3) Obtuse Angle an angle that is greater than 90° but less. than 180°. 4) Straight Angle an angle that is 180° exactly. 5) Reflex Angle an angle that is greater than 180°. E. Activity / Application. • Ask the pupils to find a pair. • Give each pair an envelope containing two strips of cardboard and a split pin     All lines are STRAIGHT. 1. TWO NON-COLLINEAR POINTS make up 2. an angle. ALL LINES and SUBSETS OF LINES are 3. made up of points. ACUTE ANGLES look more like open books. 4. A ray is a line segment that extends in ONLY 5. ONE DIRECTION. 18. Name all the ACUTE ANGLES formed by 6. the intersection of these lines Name the triangle. Tell whether each angle is acute, right, or obtuse. A name for the triangle is . /X is . /Y is . /Z is . Classify each triangle. Write acute, right, or obtuse. Classify Triangles by Angles A triangle is a polygon with sides and angles. Each pair of sides joins at a vertex. You can name a triangle by its vertices. DPQR DQRP. Supplementary Angles: Two angles whose sum is of \(180^\circ \) are known as supplementary angles. When two angles are supplementary, each angle is said to be the supplement of the other. As shown in the diagram below, \(60^\circ \)angle is the supplement of \(120^\circ \)angle or vice versa because their sum is \(180^\circ \)

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