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- 1. A N G L E S
- 2. <ul><li>You will learn to classify angles as acute , obtuse , right , or straight . </li></ul>
- 3. What is an angle? <ul><li>Two rays that share the same endpoint form an angle . The point where the rays intersect is called the vertex of the angle. The two rays are called the sides of the angle. </li></ul>
- 4. <ul><li>Here are some examples </li></ul><ul><li>of angles . </li></ul>
- 5. <ul><li>We can identify an angle by using a point on each ray and the vertex . The angle below may be identified as angle ABC or as angle CBA; you may also see this written as ABC or as CBA. The vertex point is always in the middle. </li></ul>
- 6. Angle Measurements <ul><li>We measure the size of an angle using degrees . </li></ul><ul><li>Here are some examples of angles and their degree measurements. </li></ul>
- 7. Acute Angles <ul><li>An acute angle is an angle measuring between 0 and 90 degrees. </li></ul><ul><li>The following angles are all acute angles. </li></ul>
- 8. Obtuse Angles <ul><li>An obtuse angle is an angle measuring between 90 and 180 degrees. </li></ul><ul><li>The following angles are all obtuse. </li></ul>
- 9. Right Angles <ul><li>A right angle is an angle measuring 90 degrees. </li></ul><ul><li>The following angles are both right angles. </li></ul>
- 10. Straight Angle <ul><li>A straight angle is 180 degrees. </li></ul><ul><li> </li></ul>
- 11. GAME TIME! <ul><li>The object of the game is to be the first to raise your hand and correctly name what type of angle you see . </li></ul><ul><li>The correct answer will be on the following slide!! </li></ul><ul><li>Good luck! </li></ul>
- 13. Acute Angle
- 15. Obtuse Angle
- 17. Right Angle
- 19. Straight Angle
- 20. GREAT JOB!!

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