Similar triangles and proportional sides

What you'll learn

1. Determine whether two triangles are similar using Angle-Angle (AA) similarity
2. Identify corresponding sides and set up correct proportions between similar triangles
3. Solve proportions to find unknown side lengths
4. Recognize and apply similarity in overlapping, nested, and parallel-line configurations

Prerequisites

• Setting up and solving proportions
• Triangle angle sum and exterior angle theorem