A teacher asks her students to design a game board for a class project. The dimensions of the boards created by four students are shown below. Angela
length: 20 cm
width: 21 cm
diagonal: 29 cm
Bradley
length: 9 in.
width: 9 in.
diagonal: 9 in.
Carlton
length: 25 cm
width: 30 cm
diagonal: 35 cm
Della
length: 10 in.
width: 12 in.
diagonal: 15 in.

Whose game board could be a rectangle?
Angela
Bradley
Carlton
Della

20 squared + 21 squared = 29 squared
29 + 21 = 20
29 squared + 21 squared = 20 squared