Area of Composite Shapes
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Objective
I can calculate the area of composite shapes by dividing them into simpler shapes.
Part 1 of 4
Warm-up video
Kayla Jones · 5:56
We don't generate video — this one is by Kayla Jones on YouTube. The practice questions and exit ticket below were drafted by AI for this objective, and every question is editable in the teacher guide.
Part 2 of 4
Key concepts
3 concepts
- 1
To find the area of a composite shape, break it into smaller shapes, find the area of each, and add them together.
- 2
In the example, the composite shape was divided into a trapezoid and a rectangle to calculate the total area.
- 3
When finding the area of a composite shape, you may need to use the dimensions of one shape to deduce the dimensions of another shape within the composite figure.
Part 3 of 4
Practice
10 questions
What is the first step in finding the area of a composite shape?
A composite shape is made of a rectangle and a triangle. The area of the rectangle is 20 square inches, and the area of the triangle is 10 square inches. What is the total area of the composite shape?
Part 4 of 4
Exit ticket
Quick comprehension check
“A composite shape is formed by a rectangle and a trapezoid. The rectangle has a length of 8 inches and a width of 4 inches. The trapezoid has bases of 4 inches and 6 inches, and a height of 5 inches. Calculate the total area of the composite shape, showing all steps.”
Sample answer included in the free materials
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