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# Equilateral Triangles

## Properties of triangles with three 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.

## Equilateral Triangles

by CK-12 //basic
Apply the properties of equilateral triangles.
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## Equilateral Triangles

This concept will teach students the properties of equilateral triangles and how to apply them to solve problems.
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## SLT 18 Construct an equilateral triangle and describe its rotational and reflectional symmetry.

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## Equilateral Triangles.

This concept will teach students the properties of equilateral triangles and how to apply them to solve problems.
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• PLIX

## Equilateral Triangles

Equilateral Triangles Interactive
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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

## Equilateral Triangles Principles - Basic

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

## Equilateral Triangles Examples - Basic

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

## Equilateral Triangles Principles

This video gives more detail about the mathematical principles presented in Equilateral Triangles.
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• Video

## Equilateral Triangles Examples

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

## Constructing an Equilateral Triangle

by CK-12 //basic
Shows how to construct an equilateral triangle with a compass and straight edge.
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• Video

## Proof: Equilateral Triangles Theorem

by CK-12 //basic
Provides a two column proof of the equilateral triangle theorem.
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• Video

## Examples: Using the Properties of Equilateral Triangles

by CK-12 //basic
Shows example problems of how to use the properties of equilateral triangles to solve for unknown values.
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## Equilateral Triangles Quiz

Eleven question quiz. Students will solve for missing angles and sides of equilateral triangles using basic arithmetic and algebra. One question involves the exterior angle theorem.
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• Critical Thinking

## Equilateral Triangles Discussion Questions

A list of student-submitted discussion questions for Equilateral Triangles.
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• Real World Application

## Equilateral Triangles

Is astronomy without a telescope possible? How are equilateral triangles involved?
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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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