Parallelograms

Front

What is a parallelogram?

Back

A parallelogram is a quadrilateral with opposite sides that are both equal in length and parallel.

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

How can you determine if a quadrilateral is a parallelogram using the distance formula?

Back

If both pairs of opposite sides are equal in length, then the quadrilateral is a parallelogram.

Front

What is the distance formula?

Back

Front

How can you determine if a quadrilateral is a parallelogram using the slope formula?

Back

If both pairs of opposite sides have the same slope, then the quadrilateral is a parallelogram.

Front

What is the slope formula?

Back

Front

If m∠BCD = 51°, what is the measure of the opposite angle in a parallelogram?

Back

The opposite angle m∠DAB is also 51°.

Front

If AC = 8x - 14 and EC = 2x + 11, how do you solve for x?

Back

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

What is the relationship between the diagonals of a parallelogram?

Back

The diagonals of a parallelogram bisect each other.