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Understanding Angle Relationships in Geometry Lesson 2-8

Learn about complementary, supplementary, and vertical angles with examples and calculations. Practice identifying angle pairs and their measures to prepare for the upcoming quiz.

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Understanding Angle Relationships in Geometry Lesson 2-8

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  1. I can use complementary, supplementary, and vertical angles Lesson 2-8

  2. m PQS

  3. 44 44 + 52 52 = 96°

  4. E F G 85 + 37 85 H 37 = 122°

  5. W Z X 134 134 – 49 Y 49 = 85°

  6. linear pair 180°

  7. right complementary 90°

  8. 115 180 – 115 = 65°

  9. 20 90 – 20 = 70°

  10. 5x + 5 x - 5 25° 155° = 180 5x + 5 + x – 5 6x = 180 x = 30

  11. 10x 4x + 6 12x – 12 5x = 180 31x – 6 31x = 186 30° 30° x = 6 60° 60°

  12. 1 ≅ 3 2 ≅ 4 congruent

  13. 11x 10x + 10 110° 110° 70° 11x = 10x + 10 x = 10

  14. SKIP

  15. 43° 90° 47°

  16. 1. Given 2. Given 3. Def’n of Angle bisector 3. ∠AQB ≅ ∠BQC 4. ∠BQC ≅ ∠CQD 4. Def’n of Angle bisector 5. ∠AQB ≅ ∠CQD 5. Transitive

  17. ASSIGNMENT: 2-8 worksheet, both sides Quiz tomorrow!

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