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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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2
• Video

Complementary Angles Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on identifying complementary angles.
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1
• 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".
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• 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.
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• Video

Complementary, Supplementary, and Vertical Angles

by CK-12 //basic
Defines types of angles and goes over some practice problems.
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4
• Video

Complementary Angles - Overview

by CK-12 //basic
Overview
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• Video

Complementary Angles - Example 1

by CK-12 //basic
Find the measure of an angle using given information
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Complementary Angles - Example 2

by CK-12 //basic
Find the measure of an angle using algebra
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