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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.
• Read

## Tangent Lines

by CK-12 //at grade

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

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• PLIX

## Tangent Lines

by CK-12 //at grade

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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• Video

## Tangent Lines Examples

by CK-12 //at grade

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

by CK-12 //at grade

Overview

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• Practice
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## Tangent Lines Practice

by CK-12 //at grade
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• Critical Thinking

## Tangent Lines Discussion Questions

by CK-12 //at grade

A list of student-submitted discussion questions for Tangent Lines.

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• Pre Read

## Tangent Lines Pre Read

by CK-12 //at grade

To activate prior knowledge, make personal connections, reflect on key concepts, encourage critical thinking, and assess student knowledge on the topic prior to reading using a Quickwrite.

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• Post Read

## Tangent Lines Post Read

by CK-12 //at grade

To stress understanding of a concept by summarizing the main idea and applying that understanding to create visual aids and generate questions and comments using a Concept Matrix.

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• Pre and Post Read

## Tangent Lines KWL Chart

by CK-12 //at grade

With this KWL Chart, reflect on your prior knowledge of a concept, come up with questions you’re curious about, and come up with answers from the reading.

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• Real World Application

## Swing Rides

by CK-12 //at grade

Learn how NASA uses tangent lines when launching space probes.

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• Study Guide

## Properties of a Circle Study Guide

by CK-12 //at grade

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

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