# Chapter 4: Triangles and Congruence

Difficulty Level:

**At Grade**Created by: CK-12

In this chapter, you will learn all about triangles. First, we will learn about the properties of triangles and the angles within a triangle. Second, we will use that information to determine if two different triangles are congruent. After proving two triangles are congruent, we will use that information to prove other parts of the triangles are congruent as well as the properties of equilateral and isosceles triangles.

## Chapter Outline

- 4.1. Triangle Sums
- 4.2. Congruent Figures
- 4.3. Triangle Congruence using SSS and SAS
- 4.4. Triangle Congruence Using ASA, AAS, and HL
- 4.5. Isosceles and Equilateral Triangles
- 4.6. Chapter 4 Review

### Chapter Summary

### Image Attributions

## Description

This chapter explores triangles in geometry with respect to congruency and angles. Also covered are some unique types of triangles.

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## Date Created:

Feb 23, 2012## Last Modified:

Apr 29, 2014
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