Answer Box

Proof for Problem 3

Given: quadrilateral FRED with
F(0,3), R(4,5), E(5,3) and D(1,1)

Prove: FRED is a rectangle

PROOF:

proofshow3

FRED is a parallelogram since
its diagonals bisect each other.
FRED has a right angle.
A parallelogram with a right
angle is a rectangle.
FRED is a rectangle.