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Math Tech 3 Friday, August 29, 2012 Sect. 1.4 Angle Measure

Math Tech 3 Friday, August 29, 2012 Sect. 1.4 Angle Measure. You measured line segments. Measure and classify angles. Identify and use congruent angles and the bisector of an angle. Then/Now. degree right angle acute angle obtuse angle angle bisector. ray. opposite rays angle side

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Math Tech 3 Friday, August 29, 2012 Sect. 1.4 Angle Measure

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  1. Math Tech 3 Friday, August 29, 2012 Sect. 1.4 Angle Measure

  2. You measured line segments. • Measure and classify angles. • Identify and use congruent angles and the bisector of an angle. Then/Now

  3. degree • right angle • acute angle • obtuse angle • angle bisector • ray • opposite rays • angle • side • vertex • interior • exterior Vocabulary

  4. Answer: Angles and Their Parts A. Name all angles that have B as a vertex. Example 1

  5. Answer: Angles and Their Parts B.Name the sides of5. Example 1

  6. C. Angles and Their Parts Example 1

  7. A. B. C. D. A. Example 1a

  8. A. B. C. D.none of these B. Example 1b

  9. A. B. C. D. Which of the following is another name for 3? C. Example 1c

  10. Concept

  11. Measure and Classify Angles A. Measure TYV and classify it as right, acute, or obtuse. Answer:mTYV = 90, so TYV is a right angle. Example 2

  12. Measure and Classify Angles Answer:180 > mWYT > 90, so WYT is an obtuse angle. Example 2

  13. Measure and Classify Angles Example 2

  14. A.Measure CZD and classify it as right, acute, or obtuse. A. 30°, acute B. 30°, obtuse C. 150°, acute D. 150°, obtuse Example 2a

  15. B.Measure CZE and classify it as right, acute, or obtuse. A. 60°, acute B. 90°, acute C. 90°, right D. 90°, obtuse Example 2b

  16. C.Measure DZX and classify it as right, acute, or obtuse. A. 30°, acute B. 30°, obtuse C. 150°, acute D. 150°, obtuse Example 2c

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