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# Tangent Lines

## Lines perpendicular to the radius drawn to the point of tangency.

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.

## Tangent Lines

by CK-12 //basic
Apply tangent theorems.
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## Tangent Lines

This concept teaches students about tangent lines and how to apply theorems related to tangents of circles.
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## Tangent Lines to Circles

Prove and use theorems involving lines that are tangent to circles.
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## SLT 3 Determine relationships between radii, chords, and tangents.

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• PLIX

## Tangent Lines

Tangent Lines Interactive
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• PLIX

## Tangent Lines

Tangent Lines Interactive
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• Video

## Tangent Lines Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on tangent lines.
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• Video

## Tangent Lines Examples - Basic

by CK-12 //basic
This video provides the student with a walkthrough of one or more examples from the concept "Tangent Lines".
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• Video

## Tangent Lines Principles

This video gives more detail about the mathematical principles presented in Tangent Lines.
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## Tangent Lines Examples

This video shows how to work step-by-step through one or more of the examples in Tangent Lines.
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## Tangent Lines to a Circle

by CK-12 //basic
States ands prove the tangent to a circletTheorem.
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## Tangent Lines to a Circle Example Problems

by CK-12 //basic
Provides example problems of determining unknown values using the properties of a tangent line to a circle.
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• Video

## SAT Math (Geometry) - Practice 3.7

Overview
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• Critical Thinking

## Tangent Lines Discussion Questions

A list of student-submitted discussion questions for Tangent Lines.
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• Real World Application

## Swing Rides

Learn how NASA uses tangent lines when launching space probes.
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• Study Guide