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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 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.
Academic Language • Complementary Angles • Supplementary Angles • Adjacent Angles • Linear Pair • Vertical Angles
Complementary Angles • Two angles with the sum of their measures equaling 90°
Supplementary Angles • Two angles with the sum of their measures equaling 180°
Adjacent Angles • Two angles that share a common vertex and side
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 • Linear pair – 2 angles with non-common sides being opposite rays • Vertical Angles – two angles with sides forming two pairs of opposite rays