High School · Similarity, Right Triangles, and Trigonometry

CCSS.MATH.CONTENT.HSG.SRT.B.4

Prove theorems about triangles.

Read this standard on the official Common Core site

Lessons that teach this standard

• Similar Triangles and the AA Criterion

  Why two equal angles are enough to prove triangles similar, how corresponding sides stay in a fixed ratio, and how to use that ratio to measure things you cannot reach.