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# Isosceles Triangles

## Properties of triangles with two equal sides.

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.

## Isosceles Triangles

by CK-12 //at grade

This concept will teach students the properties of isosceles triangles and how to apply them to different types of problems.

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• PLIX

## Isosceles Triangles

by CK-12 //at grade

Isosceles Triangles Interactive

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• Video

## Isosceles Triangles Principles

by CK-12 //at grade

This video gives more detail about the mathematical principles presented in Isosceles Triangles.

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• Video

## Isosceles Triangles Examples

by CK-12 //at grade

This video shows how to work step-by-step through one or more of the examples in Isosceles Triangles.

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## Isosceles Triangles Quiz

by CK-12 //at grade

Ten question quiz. Students will solve for missing angles and sides of isosceles triangles using basic arithmetic and algebra. One question involves the exterior angle theorem. For one question students must draw an isosceles triangle with two given angle measurements.

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• Practice
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## Isosceles Triangles Practice

by CK-12 //at grade
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• Interactive Exercise

## Isosceles True or False

by CK-12 //at grade

Asks a true false question about triangle classification.

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• Interactive Exercise

## Find x in Isoceles Triangle GHK

by CK-12 //at grade

Presents details about the side lengths of an isoceles triangle and asks for the variable x.

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• Interactive Exercise

## Find a side length of Isoceles triangle GHK

by CK-12 //at grade

Presents details about the side lengths of an isoceles triangle and asks you to solve for one of the lengths.

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• Interactive Exercise

## Find a side length of Isoceles triangle GHK 2

by CK-12 //at grade

Presents details about the side lengths of an isoceles triangle and asks you to solve for one of the lengths.

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• Critical Thinking

## Isosceles Triangles Discussion Questions

by CK-12 //at grade

A list of student-submitted discussion questions for Isosceles Triangles.

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## Isosceles Triangles Pre Read

by CK-12 //at grade

To activate prior knowledge, to generate questions about a given topic, and to organize knowledge using a KWL Chart.

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## Isosceles Triangles Post Read

by CK-12 //at grade

To activate prior knowledge, to generate questions about a given topic, and to organize knowledge using a KWL Chart.

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## Isosceles Triangles Ask, Answer, Learn Table

by CK-12 //at grade

Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.

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• Real World Application

## Triangles in the Sky

by CK-12 //at grade

Learn why isosceles triangles are incorporated into the design of stealth bomber aircraft.

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• Real World Application

## Isosceles Triangles

by CK-12 //at grade

Make isosceles triangles using origami.

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• Study Guide

## Triangle Relationships Study Guide

by CK-12 //at grade

This study guide reviews terminology for triangles, different types of triangles, and interior and exterior angles theorems.

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