Angle Criterion for Similarity of Triangles

Angle Criterion for Similarity of Triangles

Introduction

Have you ever noticed that two objects can have the same shape but different sizes? That idea is important in geometry. The angle criterion for similarity helps us decide when two triangles have the ...

John sits in math class, looking at two triangles, each showing two angles, and wondering if they are similar.

His teacher explains a simple way to decide, called the Angle-Angle similarity rule.

The rule says that if two angles in one triangle are congruent to two angles in another triangle, then the third angles are als...