Which of these must be a parallelogram?

any square

any rhombus

any rectangle

all of these

Which of these is true for all parallelograms?

Opposite sides are parallel.

Opposite sides are congruent.

Opposite angles are congruent.

All of these are true for all parallelograms.

One base of a trapezoid has length 100, and the length of the midsegment is 120. How long is the other base?

80

110

120

140

One vertex of a parallelogram is (8,0). The vertex next to it is (0, 0), and the vertex across from it is (2, 10). At what point do the diagonals of the parallelogram cross?

(0, 0)

(4, 0)

(1, 5)

(5, 5)