Define complementary angles and provide an example.

Complementary angles are two angles whose measures add up to 90 degrees. Example: 40° and 50°.

Define supplementary angles and provide an example.

Supplementary angles are two angles whose measures add up to 180 degrees. Example: 130° and 50°.

Name: Exploring Complementary and Supplementary Angles
Author: Insta~Lesson

12th Grade · Math · 60 min· M.7.15

I can apply the properties of complementary and supplementary angles to solve geometric problems.

1
Complementary angles are two angles whose measures add up to 90 degrees.
2
Supplementary angles are two angles whose measures add up to 180 degrees.
3
Recognizing complementary and supplementary angle relationships allows you to set up equations and solve for unknown angles.

We would love to help you present Insta~Lesson to your colleagues and administrators. Here are a few resources you can use:

A simple one-pager you can use to share Insta~Lesson.

Learn how Insta~Lesson makes life easier for teachers. This is a great resource to share at a staff meeting or PD!

Learn more about Insta~Lesson's dedicated supports for partner schools.