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# Isosceles Triangles

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Levels are CK12'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 //basic

Apply the properties of isosceles triangles.

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## Isosceles Triangles

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

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• Video

## Equilateral and Isosceles Example Problems

by CK-12 //basic

A video showing how to solve for the remaining angle/bases of an isosceles triangle, as well as solving the same problem using an equilateral triangle.

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• Video

## Isosceles Triangles Principles - Basic

by CK-12 //basic

This video provides the student with a walkthrough on Isosceles triangles.

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## Isosceles Triangles Examples - Basic

by CK-12 //basic

This video provides the student with a walkthrough of one or more examples from the concept "Isosceles Triangles".

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• Video

## Isosceles Triangles Principles

This video gives more detail about the mathematical principles presented in Basic Geometric Definitions.

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• Video

## Isosceles Triangles Examples

This video gives more detail about the mathematical principles presented in Basic Geometric Definitions.

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• Video

## How To Construct An Isosceles Triangle

by CK-12 //basic

Shows how to construct an isosceles triangle with a compass and straight edge.

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• Video

## Proof of the Isosceles Triangle Theorem

by CK-12 //basic

Provides a two column proof of the isosceles triangle theorem.

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• Video

## Using the Properties of Isosceles Triangles to Determine Values

by CK-12 //basic

Shows example problems of how to use the properties of isosceles triangles to solve for unknown values.

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## Isosceles Triangles Quiz

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

## Isosceles Triangles Practice

by CK-12 //basic

Practice Isosceles Triangles questions

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• Interactive Exercise

## Isosceles True or False

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• Interactive Exercise

## Find x in Isoceles Triangle GHK

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

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

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

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

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

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

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• Real World Application

## Triangles in the Sky

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

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• Real World Application

## Isosceles Triangles

Make isosceles triangles using origami.

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• Study Guide

## Triangle Relationships Study Guide

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

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• Flashcards

## Isosceles, Right, and Equilateral Triangles Flashcards

by CK-12 //basic

These flashcards help you study important terms and vocabulary from Isosceles Triangles and Equilateral Triangles.

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