Hello, Ai Ekio!

1. Draw a trapezoid.

Label its bases and height , respectively.

Then draw a diagonal of the trapezoid.

(a) Write an expression for the area of each of the two triangles.

(b) Explain how you can justify the trapezoid area formula

using the areas of the two triangles. Code:

b2
B * * * * * * C
*: * *
* : * *
* :h * *
* : * *
* : * *
A * * * * * * * * * D
b1

(a) has base and height

. . . Its area is: .

. . has base and height

. . . Its area is: .

(b) The area of the trapezoid is the sum of the areas of the two triangles.

. .