Compound Area Calculations
Grade 6th Grade · Math · 35 min
What's Included
Learning Objective
I can find the area of compound shapes by breaking them into smaller known figures
Warm-Up Video
Math with Mr. J · 7:14
Finding the Area of a Composite Figure | Area of Composite Rectangles
Guided Notes
3 key concepts
- 1
To find the area of an irregular polygon, you must decompose it into different shapes for which you know the area formulas, such as triangles and trapezoids.
- 2
The apothem is the distance from the center of a regular polygon to the side at a right angle, and it represents the height of the triangles formed when finding the area.
- 3
The area of a regular polygon can be found using the formula: Area = ½ × perimeter × apothem.
Practice Questions
4 questions · Multiple choice & Short answer
Exit Ticket
Quick comprehension check
“A compound shape is made of a rectangle and a square. The rectangle is 4 inches long and 2 inches wide. The square has sides of 3 inches. What is the total area of the compound shape? Show your work.”
Teacher Guide
Get the complete package:
- Answer keys for all questions
- Differentiation strategies
- Extension activities
- Printable student handouts
