Main content

## Get ready for Geometry

### Course: Get ready for Geometry > Unit 1

Lesson 6: Triangle angles- Angles in a triangle sum to 180° proof
- Find angles in triangles
- Isosceles & equilateral triangles problems
- Find angles in isosceles triangles
- Triangle exterior angle example
- Worked example: Triangle angles (intersecting lines)
- Worked example: Triangle angles (diagram)
- Finding angle measures using triangles
- Triangle angle challenge problem
- Triangle angle challenge problem 2
- Triangle angles review

© 2023 Khan AcademyTerms of usePrivacy PolicyCookie Notice

# Find angles in isosceles triangles

CCSS.Math: 8.G.A.5, HSG.SRT.B.5

You might need: Calculator

## Problem

Stuck?

Stuck?