Midcontinent Research for Education and Learning
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Common Core Mathematics 912
Cluster
Prove theorems involving similarity
Grade 912
G.SRT.4.
Prove theorems about triangles. Theorems include: a line parallel to one side of a triangle divides the other two proportionally, and conversely; the Pythagorean Theorem proved using triangle similarity.
G.SRT.5.
Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures.