Parallelogram Theorems

Front

A rhombus is a parallelogram with

Back

four congruent sides.

Front

The diagonals of a parallelogram are parallel to each other.

Back

False.

Front

All rectangles are parallelograms.

Back

True.

Front

Which of the following properties is true about parallelograms? Base angles are congruent, Diagonals are congruent, Opposite sides are parallel.

Back

Opposite sides are parallel.

Front

A rhombus is a parallelogram.

Back

True.

Front

What is a parallelogram?

Back

A quadrilateral with opposite sides parallel.

Front

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

Back

360 degrees.

Front

In a parallelogram, how do the opposite angles relate to each other?

Back

They are congruent.

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

70 degrees, 110 degrees, 110 degrees.