Properties of Parallelograms

Front

What is one of the properties of parallelograms?

Back

The opposite sides are equal and parallel.

Front

In a parallelogram, consecutive angles are __________ (they add up to 180 degrees).

Back

supplementary

Front

What can be said about the opposite sides of a parallelogram?

Back

They are equal and parallel.

Front

What can be said about the opposite angles of a parallelogram?

Back

They are equal.

Front

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

Back

360 degrees.

Front

What is the relationship between the diagonals of a parallelogram?

Back

They bisect each other.

Front

If one angle of a parallelogram is 70 degrees, what are the measures of the other angles?

Back

The opposite angle is also 70 degrees, and the consecutive angles are 110 degrees each.

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height.

Front

How do you determine if a quadrilateral is a parallelogram?

Back

If one pair of opposite sides is both equal and parallel.

Front

What is the relationship between the lengths of the diagonals in a parallelogram?

Back

The diagonals are not necessarily equal but bisect each other.