1.The opposite sides of a parallelogram are _________.

1. adjacent
2. congruent
3. collinear
4. perpendicular

2.If a parallelogram is a rectangle then the diagonals are congruent.

TRUE

FALSE

3.ABCD is an isosceles trapezoid. What is true about the diagonals of this trapezoid?

1. The diagonals bisect each other.
2. The diagonals are congruent.
3. The diagonals are perpendicular.
4. The diagonals are half the measure of the sides.

4.YWXZ is a parallelogram with diagonals that intersect at point S. If YS = 34 and SX = 2x - 10, find x.

5.ABCD is a parallelogram. If AB is equal to 2x + 1 and CD is equal to x + 13, find x.

6.ABCD is a parallelogram. If angle B is equal to (2x) and angle A is equal to (-x + 120), find x.

7.ABCD is a parallelogram. If AB = 2x - y, CD = 7, BC = x + y , AD = 2 find x and y.