Question

A rectangular stained glass window is made up of identical triangular parts as pictured below.

mc019-1.jpg

What is the area of the shaded triangular section?
18 square inches
36 square inches
72 square inches
144 square inches

Answer 1

I can't see the picture.
@crosstheline0236

Answer 2

48/3 = 16
36/4 = 9
Multiply those two, and divide by 2 because the rectangle is divided into 2 triangles.
16*9/2 = 144

Answer 3

@crosstheline0236