What is an Equilateral Triangle? - Definition, Properties & Formula


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question 1 of 3

In an equilateral triangle, what it the sum of any two of its angles?

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1. What is the perimeter of an equilateral triangle if one of its sides is 2 feet long?

2. If half of an equilateral triangle's base is 100 inches long, what is the triangle's perimeter?

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About This Quiz & Worksheet

This quiz/worksheet combo will help measure your knowledge of equilateral triangles. Topics you will be assessed on include the definition of equilateral and calculating area and perimeter.

Quiz & Worksheet Goals

In these assessments you'll be tested on these goals:

  • Define equilateral
  • Understand angle measures of equilateral triangles
  • Solve for area and perimeter in practice problems

Skills Practiced

This quiz and worksheet allow students to test the following skills:

  • Reading comprehension - ensure that you draw the most important information from the related geometry lesson
  • Problem solving - use acquired knowledge to solve mathematical practice problems
  • Information recall - access the knowledge you've gained regarding the term equilateral triangle

Additional Learning

To learn more about equilateral triangles, review the accompanying lesson What Is An Equilateral Triangle. This lesson covers the following objectives:

  • Learn the properties of equilateral triangles
  • Find perimeter and area and identify formulas
  • Examine lesson examples of equilateral triangles