Abdallah sees two right triangles that have the two acute angles from the first triangle are congruent to the two acute angles from the second triangle and concludes that they are congruent. Is he correct? If not, show a counterexample. Draw a diagram to show your work.

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.