Identification of Angles by Vertex and Ray

Learn how to name angles using letters.

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.
• Video

Introduction to Angles

by CK-12 //basic
Defines angles and examines angles in a circle.
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• Video

Defining an Angle - Overview

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Overview
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• Video

Angles on a Line - Overview

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Overview
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• Video

Angles at a Point - Overview

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Overview
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• Video

Angles on a Line - Example 1

by CK-12 //basic
Find the measure of an angle on a line using given information (1 step)
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• Video

Angles on a Line - Example 2

by CK-12 //basic
Find the measure of an angle on a line using given information (2 steps)
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• Video

Angles on a Line - Example 3

by CK-12 //basic
Find the measure of an angle on a line using algebra
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• Video

Angles at a Point - Example 1

by CK-12 //basic
Find the measure of an angle at a point using given information (1 step)
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• Video

Angles at a Point - Example 2

by CK-12 //basic
Find the measure of an angle at a point using given information (2 steps)
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• Video

Angles at a Point - Example 3

by CK-12 //basic
Find the measure of an angle at a point using algebra
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• Video

Angles at a Point - Example 4

by CK-12 //basic
Find the measure of an angle created by a divided circle
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