In this video we'll learn how to use the SSS (side-side-side), SAS (side-angle-side), and AA (angle-angle) theorems to prove that two triangles are similar. Similar triangles are triangles that have three congruent interior angle measures. They may have different side lengths, or they may be rotated or flipped, but their three interior angles are the same.

Streaming video file encoded with permission for digital streaming by Infobase on April 25, 2015.

Triangle Similarity Statements: Geometry-Dilations and Scale Factors --(9:06).