High School Geometry
Domain Similarity, Right Triangles, and Trigonometry
Cluster Prove theorems involving similarity
Standard Prove theorems about triangles. <span class='clarification'>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.</span>

G-SRT.B.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.