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What’s Your Angle?. MACC.7.G.2.5 Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure. Vocabulary. Supplementary angles are two angles whose measures add up to 180 degrees.
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What’s Your Angle? MACC.7.G.2.5 Use facts about supplementary, complementary, vertical, and adjacent angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure.
Vocabulary • Supplementary angles are two angles whose measures add up to 180 degrees. • Complementary angles are two angles whose measures add up to 90 degrees. • Adjacent angles are two angles that have the same vertex and a common side. • Vertical angles are two nonadjacent angles that are formed by two intersecting lines.
Let’s Try It List the supplementary angles of . List the complementary angles of . List the vertical angles shown. What is the measure of ?
Let’s Review List the supplementary angles of .
Let’s Review List the complementary angles of .
Let’s Review List the vertical angles shown.
Let’s Review When given a sketch or figure, we can write and solve equations to find the measures of missing angles. What is the measure of ?
What’s Your Angle? • Each handout contains four sketches and 24 equation cards. Cut out equation card. Do not cut out the sketches. • The sketches are not drawn to scale and protractors cannot be used. Assume that all lines are straight lines and all right angles are represented by a small box in the vertex. Some equation cards are identical, because the same equation can match two sketches. • Glue the sketches across the top of another sheet of paper. Now match each equation card with a sketch, then glue the matching cards beneath each sketch. You have 20 minutes to complete this task.