# Area and Perimeter of Triangles

## Area is half the base times the height while the perimeter is the sum of the 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.

## Area and Perimeter of Triangles

by CK-12 //basic
Calculate the area and perimeter of a triangle.
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## Area and Perimeter of Triangles

This concept teaches students to find the area and perimeter of triangles.
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## Find the Dimensions and Area of Triangles

Learn to find the dimensions and area of triangles.
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## Area or Perimeter of Triangles and Quadrilaterals

Derive and use the formulas for area and perimeter of triangles and quadrilaterals.
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## SLT 1 What is Area?

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## Proofs with "Corresponding Parts of Congruent Triangles are Congruent"

by Scott Lamie //
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• PLIX

## Area and Perimeter of Triangles

Area and Perimeter of Triangles Interactive
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• PLIX

## Area and Perimeter of Triangles

Area and Perimeter of Triangles Interactive
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• Video

## Area of a Triangle (Whole Numbers)

by CK-12 //basic
Provides an example of how to determine the area of a triangle using whole numbers.
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• Video

## Area and Perimeter of Triangles Principles - Basic

by CK-12 //basic
This video provides the student with a walkthrough on finding area and perimeter of triangles.
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• Video

## Area and Perimeter of Triangles Examples - Basic

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

## Area and Perimeter of Triangles Principles

This video gives more detail about the mathematical principles presented in Area and Perimeter of Triangles.
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• Video

## Area and Perimeter of Triangles Examples

This video shows how to work step-by-step through one or more of the examples in Area and Perimeter of Triangles.
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• Critical Thinking

## Area and Perimeter of Triangles Discussion Questions

A list of student-submitted discussion questions for Area and Perimeter of Triangles.
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• Real World Application

## Fly Free!

Find out how triangles are incorporated into the design of hang gliders.
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• Real World Application

## Perimeter

How would you use perimeter and area in designing a scooter race track?
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• Study Guide

## Triangles and Quadrilaterals Study Guide

This study guide reviews the formulas for the perimeter and area of triangles and different types of quadrilaterals.
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## Triangle Explorer

by Kyle Bardman //basic
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## Area and Perimeter

by Kyle Bardman //basic
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• Flashcards

## Find the Dimensions and Area of Triangles

by Ellaine Chou //basic