Parallelogram Properties

Front

What is a parallelogram?

Back

A parallelogram is a four-sided figure (quadrilateral) where opposite sides are parallel and equal in length.

Front

What are the properties of a parallelogram?

Back

1. Opposite sides are equal in length. 2. Opposite angles are equal. 3. The diagonals bisect each other.

Front

What does it mean for diagonals to bisect each other?

Back

It means that each diagonal divides the other into two equal parts.

Front

If ABCD is a parallelogram, what can be said about angles A and C?

Back

Angles A and C are equal.

Front

If the length of one side of a parallelogram is 10 cm, what is the length of the opposite side?

Back

The length of the opposite side is also 10 cm.

Front

What is the sum of the interior angles of a parallelogram?

Back

The sum of the interior angles of a parallelogram is 360 degrees.

Front

In parallelogram WXYZ, if angle W is 99 degrees, what is the measure of angle Y?

Back

Angle Y is 81 degrees.

Front

Which property is NOT true for a parallelogram?

Back

Diagonals are congruent.

Front

What is the relationship between adjacent angles in a parallelogram?

Back

Adjacent angles are supplementary, meaning they add up to 180 degrees.

Front

If the diagonals of a parallelogram are perpendicular, what can be said about the parallelogram?

Back

It is a rhombus.