Brilliant

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Algebra
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Calculating Areas

Intro

Concept Quizzes

Area Warmup
Area From Rectangles to Triangles
Area From Rectangles to Parallelograms and Trapezoids
Length and Area Warmup
Area Applications

Challenge Quizzes

Length and Area: Level 1 Challenges
Length and Area: Level 2 Challenges
Length and Area: Level 3 Challenges

Area From Rectangles to Triangles

The area of the rectangle is 40. What is the area of the triangle?

10 20 30 Cannot be determined

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by Brilliant Staff

The area of the rectangle is 10. What is the area of the triangle?

4 5 6 Cannot be determined

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by Brilliant Staff

The area of the parallelogram is 100. What is the area of the triangle?

25 50 75 Cannot be determined

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by Brilliant Staff

Which triangle has a greater area?

A B They're equal

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by Brilliant Staff

If each square on the grid has an area of 1, what is the area of the triangle?

12 14 15 16

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by Brilliant Staff

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