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CCSS Math Standard 9-12.G.SRT.4
G.SRT - Similarity, Right Triangles, and Trigonometry

CCSS Math Standard 9-12.G.SRT.4

Prove theorems involving similarity. 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.  

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