Back to Use informal arguments to establish facts about angles and similarity of triangles — Problem 2 · Task Set 67

8.G.A.5 Tutor Intake -- Angle Relationships and AA Similarity

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without a calculator or protractor. Do your best -- the goal is to find
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Grade 8·6 problems·~8 min·Common Core Math - Grade 8·container·8-g-a-5

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Concepts

What does the Angle-Angle (AA) criterion state?

If two angles of one triangle equal two angles of another triangle, the triangles are similar

If two angles of one triangle equal two angles of another triangle, the triangles are congruent

Any two triangles with a right angle are similar

Two triangles are similar only if all three angle pairs are checked and found equal