Mr thomson wants to protect his garage by installing a flood barrier. he connects two barriers side by side. each barrier is 9 feet long by 2 feet high. what is the combined area of the barriers?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.