Parallelograms

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

Which property is NOT true for a parallelogram?

Back

Diagonals are congruent.

Front

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

Back

Angles A and C are equal.

Front

If ABCD is a parallelogram, what can be said about angles B and D?

Back

Angles B and D are equal.

Front

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

Back

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

Front

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

Back

The other angles are 110°, 70°, and 110°.

Front

How do you find the length of the diagonals in a parallelogram?

Back

Front

If the lengths of two adjacent sides of a parallelogram are 5 cm and 12 cm, what is the maximum length of the diagonal?

Back

The maximum length of the diagonal is 13 cm.

Front

What is the relationship between the diagonals of a parallelogram?

Back

The diagonals bisect each other but are not necessarily equal.