Properties of Parallelograms

Front

The opposite angles of a parallelogram are ...

Back

congruent

Front

To prove that the following parallelogram ABCD is a rectangle, which of the following must be true? m∠D = ?

Back

90°

Front

If a parallelogram has one angle measuring 40°, what are the measures of the other angles?

Back

140°, 40°, 140°

Front

In a parallelogram, the sum of the interior angles is ...

Back

360°

Front

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

Back

110°, 70°, 110°

Front

The diagonals of a parallelogram bisect each other. True or False?

Back

True

Front

If the sides of a parallelogram are equal, it is called a ...

Back

rhombus

Front

In a parallelogram, the consecutive angles are ...

Back

supplementary

Front

If a parallelogram has two adjacent angles measuring 60° and 120°, what type of parallelogram is it?

Back

It is a rhomboid.

Front

The area of a parallelogram is calculated using the formula ...

Back

Area = base × height