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# Complementary Angles

## Two angles that add to 90 degrees.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Complementary Angles

by CK-12 //basic

Solve complementary angle problems.

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• Video

## Complementary Angles Principles - Basic

by CK-12 //basic

This video provides the student with a walkthrough on identifying complementary angles.

0
• Video

## Complementary Angles Examples - Basic

by CK-12 //basic

This video provides the student with a walkthrough of one or more examples from the concept "Complementary Angles".

0
• Video

## Angle Basics

by CK-12 //basic

Learn all the basics you'll need to know about angles. James Sousa introduces angle vocabulary and measurement.

0
• Video

## Complementary, Supplementary, and Vertical Angles

by CK-12 //basic

Defines types of angles and goes over some practice problems.

4
• Video

## Complementary Angles - Overview

by CK-12 //basic

Overview

0
• Video

## Complementary Angles - Example 1

by CK-12 //basic

Find the measure of an angle using given information

0
• Video

## Complementary Angles - Example 2

by CK-12 //basic

Find the measure of an angle using algebra

0
• Flashcards

## Complementary Angles Flashcards

by CK-12 //basic

These flashcards help you study important terms and vocabulary from Complementary Angles.

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