Compound Area Calculations
6th Grade · Math · 35 min
Lesson Preview
Learning Objective
I can find the area of compound shapes by breaking them into smaller known figures
- 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.
