Decomposing
How to decompose a trapezoid
Make them into 2 triangles and 1 rectangle
What is the formula for finding the area of a triangle
(W x L)/2 = A
How do you find the area of a trapezoid?
You need to decompose the trapezoid into 2 triangles and one rectangle and then find the area for all shapes and add them together
How to find the area of a rectangle?
Length x Width
What do you get when you decompose a rectangle
2 Triangles
Find The Area for a triangle. 9= Length 10= Width
45
Find the Area for the trapezoid. Triangle area= 30 Other Triangle area= 40 Rectangle area= 60
130
Solve for area. 12= Length 11= Width
132
What do you get when you combine 2 Triangles?
Decompose a Rectangle and Solve for Area. First Triangle Area= 45 Second Triangle Area= 50
95