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Area and Perimeter of Triangles

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

Area and Perimeter of Triangles

by CK-12 //at grade

This concept teaches students to find the area and perimeter of triangles.

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• PLIX

Area and Perimeter of Triangles

by CK-12 //at grade

Area and Perimeter of Triangles Interactive

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• PLIX

Area and Perimeter of Triangles

by CK-12 //at grade

Area and Perimeter of Triangles Interactive

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• Video

Area and Perimeter of Triangles Principles

by CK-12 //at grade

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

by CK-12 //at grade

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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• Downloadable Quiz

Area and Perimeter of Triangles Quiz

by CK-12 //at grade

Nine question quiz. Students must solve for the area, perimeter, and missing sides of triangles.

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• Interactive Exercise

Find the Perimeter of this Polygon

by CK-12 //at grade

A polygon and a side length is given. Determine the perimeter.

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• Interactive Exercise

Perimeter of Equilateral Triangle ABC

by CK-12 //at grade

Presents details about the side lengths of an equilateral triangle and asks the perimeter.

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• Interactive Exercise

What is Perimeter?

by CK-12 //at grade

Checks your understanding of what perimeter means.

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• Interactive Exercise

What is Area?

by CK-12 //at grade

Checks your understanding of what area means.

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• Practice
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Area and Perimeter of Triangles Practice

by CK-12 //at grade
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• Interactive Exercise

What is the area of a triangle?

by CK-12 //at grade

Checks your understanding of what the area of a triangle is.

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• Interactive Exercise

What is the area of a rectangle?

by CK-12 //at grade

Checks your understanding of what the area of a rectangle is.

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• Interactive Exercise

How does the Perimeter or Area Change?

by CK-12 //at grade

Checks your understanding of similar triangles.

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• Interactive Exercise

How does the Perimeter or Area Change (part 2)?

by CK-12 //at grade

Checks your understanding of how perimeter and area change when a figure gets scaled.

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• Interactive Exercise

Side Length of Equilateral Triangle ABC

by CK-12 //at grade

Presents details about the side lengths of an equilateral triangle and asks the perimeter.

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• Critical Thinking

Area and Perimeter of Triangles Discussion Questions

by CK-12 //at grade

A list of student-submitted discussion questions for Area and Perimeter of Triangles.

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• Pre Read

Area and Perimeter of Triangles Pre Read

by CK-12 //at grade

To stress understanding of a concept by summarizing the main idea and applying that understanding to create visual aids and generate questions and comments using a Concept Matrix.

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• Post Read

Area and Perimeter of Triangles Post Read

by CK-12 //at grade

To stress understanding of a concept by summarizing the main idea and applying that understanding to create visual aids and generate questions and comments using a Concept Matrix.

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• While Read

Find the Dimensions and Area of Triangles

by CK-12 //at grade

Come up with questions about a topic and learn new vocabulary words to determine answers using an Ask, Answer, Learn table.

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• Pre and Post Read

Area and Perimeter of Triangles KWL Chart

by CK-12 //at grade

With this KWL Chart, reflect on your prior knowledge of a concept, come up with questions you’re curious about, and come up with answers from the reading.

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• Real World Application

Fly Free!

by CK-12 //at grade

Find out how triangles are incorporated into the design of hang gliders.

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• Real World Application

Perimeter

by CK-12 //at grade

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

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• Study Guide

Triangles and Quadrilaterals Study Guide

by CK-12 //at grade

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

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