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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.
• Read

## Equilateral Triangles

by CK-12 //basic

Apply the properties of equilateral triangles.

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• Read

## SLT 18 Construct an equilateral triangle and describe its rotational and reflectional symmetry.

by MCPS Math //at grade

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• Read

## Equilateral Triangles.

by Scott Lamie //at grade

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

by CK-12 //at grade

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

by CK-12 //at grade

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

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• Video

## Equilateral Triangles Examples

by CK-12 //at grade

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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• Downloadable Quiz

## Equilateral Triangles Quiz

by CK-12 //at grade

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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• Practice
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## Equilateral Triangles Practice

by CK-12 //at grade
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• Interactive Exercise

## Equilateral Triangles True or False

by CK-12 //at grade

Asks a true false question about triangle classification.

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• Critical Thinking

## Equilateral Triangles Discussion Questions

by CK-12 //at grade

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

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• Pre Read

## Equilateral Triangles Pre Read

by CK-12 //at grade

To encourage students to generate questions, activate their prior knowledge, and collect information to answer their own questions using a Question and Answer Table.

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• Post Read

## Equilateral Triangles Post Read

by CK-12 //at grade

To encourage students to generate questions, activate their prior knowledge, and collect information to answer their own questions using a Question and Answer Table.

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• While Read

## Equilateral Triangles Stop and Jot Table

by CK-12 //at grade

Learn new vocabulary words and help remember them by coming up with your own sentences with the new words using a Stop and Jot table.

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• Real World Application

## Equilateral Triangles

by CK-12 //at grade

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

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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.

1
• Link

## Interactive Triangles

by CK-12 //basic

This interactive allows you to explore the different kinds of triangle, all their side and angle combinations, and how they can be scaled to form similar triangles.

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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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