Which statements are correct regarding the properties of trapezoids? Check all that apply.
The diagonals of an isosceles trapezoid are congruent.
The bases of a trapezoid are parallel.
The adjacent sides of a trapezoid are congruent.
Base angles of a trapezoid are congruent.
The diagonals of a trapezoid are perpendicular.
AB = 20; CD = 15
AB = 15; CD = 20
AB = 9; CD = 16
AB = 24; CD = 25