Question

Which of these sentences is always true for a parallelogram? A. All sides are congruent.. . . B.All angles are congruent.. . . C.The diagonals are congruent.. . . D.Opposite angles are congruent. .

Answer 1

Opposite angles are congruent

Answer 2

A parallelogram is a 4-sided polygon whose opposite sides are equal. By definition, opposite angles are also equal. A square, rectangle, or rhombus are considered as a parallelogram. Among the choices, the correct answer is D. "Opposite angles are congruent"