# Tangent Lines

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

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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

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This concept teaches students about tangent lines and how to apply theorems related to tangents of circles.
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• PLIX

## Tangent Lines

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Tangent Lines Interactive
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## Tangent Lines

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Tangent Lines Interactive
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• Video

## Tangent Lines Principles

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

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

## SAT Math (Geometry) - Practice 3.7

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Overview
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• Critical Thinking

## Tangent Lines Discussion Questions

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

## Swing Rides

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

## Properties of a Circle Study Guide

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This study guide reviews the terminology for circles (tangent, arcs, central angles) and the equation for a circle.
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