Lesson 2.05 Triangle Similarity: SSS and SAS

• Introduction
• Learn
• Try It
• Task

Introduction

In the previous lesson, you learned how to prove two triangles are similar using two angles in the triangle. However, you must also consider what would happen if you were not given any information about the angles. For example, what if you were given the following diagram and wanted to prove the triangles similar? How would you do it?

In this lesson, you will study how to prove triangles similar using the side-side-side (SSS) and side-angle-side (SAS) similarity theorems. Be sure to write down all important information for future reference and to use while completing the task.