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# Angles Outside a Circle

## Angles formed outside a circle by tangents or secants.

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.

## Angles Outside a Circle

This concept teaches students how to calculate angles formed outside a circle by tangent and secant lines.
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• PLIX

## Outside Angle Theorem

Angles Outside a Circle Interactive
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## Angles Outside a Circle Principles

This video gives more detail about the mathematical principles presented in Angles Outside a Circle.
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## Angles Outside a Circle Examples

This video shows how to work step-by-step through one or more of the examples in Angles Outside a Circle.
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• Critical Thinking

## Angles Outside a Circle Discussion Questions

A list of student-submitted discussion questions for Angles Outside a Circle.
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• Study Guide