Composite Area with Rectangles and Triangles
Learning Objective
I can find the area of composite figures by breaking them into rectangles and triangles.
Lesson Flow
Watch Video
Finding the Area of Composite Figures with Triangles | Math with Mr. J
Math with Mr. J
Guided Notes
Key concepts students will learn:
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To find the area of a composite figure, separate the figure into simpler shapes like rectangles and triangles.
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The formula for the area of a triangle is base x height ÷ 2, and the formula for the area of a rectangle is length x width.
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After finding the area of each individual shape, add the areas together to find the total area of the composite figure.
Practice
9 questions • Short answer
Exit Ticket
“A composite figure is made of a rectangle and a right triangle. The rectangle has a length of 8 inches and a width of 5 inches. The triangle's base is 8 inches, and its height is 3 inches. What is the total area of the composite figure?”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
