Which quadrilaterals have diagonals that are perpendicular? a. kite, rhombus, and square b. trapezoid, rhombus, and square c. kite, trapezoid, and parallelogram d. rectangle, square, and parallelogram

1. ∠1 is complementary to ∠2 and ∠3 is complementary to ∠2. subtraction property of equality 2. m∠1 + m∠2 = 90 and m∠3 + m∠2 = 90 substitution 3. m∠1 + m∠2 = m∠3 + m∠2 definition of complementary 4. m∠1 = m∠3 given