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Lesson 1.5. Describe Angle Pair Relationships. Objectives. Use special angle relationships to find angle measurements. Standard. Prep for 13.0 – Students prove relationships between angles in polygons by using properties of complementary, supplementary, vertical and exterior angles.

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lesson 1 5

Lesson 1.5

Describe Angle Pair Relationships

objectives
Objectives
  • Use special angle relationships to find angle measurements
standard
Standard
  • Prep for 13.0 – Students prove relationships between angles in polygons by using properties of complementary, supplementary, vertical and exterior angles.
academic language
Academic Language
  • Complementary Angles
  • Supplementary Angles
  • Adjacent Angles
  • Linear Pair
  • Vertical Angles
complementary angles
Complementary Angles
  • Two angles with the sum of their measures equaling 90°
supplementary angles
Supplementary Angles
  • Two angles with the sum of their measures equaling 180°
adjacent angles
Adjacent Angles
  • Two angles that share a common vertex and side
indie practice
Indie Practice
  • Given ∠1 is a complementary angle of ∠2 and m∠1=68°, find m∠2.
  • Given ∠3 is a supplementary angle of ∠4 and m∠4=68°, find m∠3.
angle pairs
Angle Pairs
  • Linear pair – 2 angles with non-common sides being opposite rays
  • Vertical Angles – two angles with sides forming two pairs of opposite rays