Question

Quadrilateral ABCD is a parallelogram. If adjacent angles are congruent, which statement must be true?

Answer 1

A. Quadrilateral ABCD is a square.
B. Quadrilateral ABCD is a rhombus.
C. Quadrilateral ABCD is a rectangle.
D. Quadrilateral ABCD is an isosceles trapezoid.

Answer 2

B i think:)

Answer 3

orr a

Answer 4

If adjacent angles are congruent, then those angles are right angles because adjacent angles of a parallelogram are supplementary and opposite angles are congruent.

Nothing is said about the sides of the parallelogram.

A parallelogram with 4 right angles is a rectangle.