ABCD is a parallelogram with diagonals intersecting at E. Which is NOT true?

Which of the following is NOT a property of a parallelogram?

		Consecutive angles are congruent.
		Opposite sides are congruent.
		Opposite angles are congruent.
		Consecutive angles are supplements.
		Opposite sides are parallel.

In ABCD, diagonals and intersect at E. If AE=(x + 22), EC=(3x + 26), find the value of x.

In ABCD, angle A is 96 less than three times of angle B. Find mD.

Name the properties of a parallelogram.

Name the ways of proving a quadrilateral is a parallelogram.

The coordinates of a parallelogram are (4, 4), (5, 7), (10, 5), and (x, y) and x > 10. What is the value of x + y?

In PQRS, mP=(x + 47) and mR=(8x + 75). Find the value of x.

What is the difference between a parallelogram and a rectangle?

In ABCD, AB=(2x - 9) and CD=(-2x + 39). Find AB.

ABCD is a parallelogram. AB = 2x, AD = 4y - 6, BC = 3x. If the perimeter of ABCD is 180, find the values of x and y.

Suppose points A(-4, 2), B(0, 2), C(1, 10), and D(-3, 10) are vertices of a parallelogram. Find the perimeter of ABCD.

In ABCD, AB = 2x + 3, BC = 4y, CD = 4x - 5, DA = y + 6. What is the value of xy?

In DEFG, the measure of D exceeds the measure of E by 30. Find the measure of D.