Properties of Parallelograms

Front

What is a parallelogram?

Back

A parallelogram is a quadrilateral with both pairs of opposite sides parallel.

Front

What property do the diagonals of a parallelogram have?

Back

The diagonals of a parallelogram bisect each other.

Front

What can be concluded if both pairs of opposite sides of a quadrilateral are congruent?

Back

The quadrilateral is a parallelogram.

Front

What is the relationship between opposite angles in a parallelogram?

Back

Opposite angles in a parallelogram are congruent.

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

If one pair of opposite sides of a quadrilateral is both parallel and congruent, what can be concluded?

Back

The quadrilateral is a parallelogram.

Front

What is the property of consecutive angles in a parallelogram?

Back

Consecutive angles in a parallelogram are supplementary.

Front

How can you prove that a quadrilateral is a parallelogram using angles?

Back

If both pairs of opposite angles are congruent, then the quadrilateral is a parallelogram.

Front

What is the relationship between the lengths of the sides of a parallelogram?

Back

Opposite sides of a parallelogram are congruent.

Front

If the diagonals of a quadrilateral bisect each other, what can be concluded?

Back

The quadrilateral is a parallelogram.