Parallelogram Properties

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

In a parallelogram, what is true about the opposite angles?

Back

Opposite angles are congruent.

Front

In a parallelogram, what is true about the consecutive angles?

Back

Consecutive angles are supplementary, meaning they add up to 180 degrees.

Front

What happens to the diagonals of a parallelogram?

Back

The diagonals of a parallelogram bisect each other.

Front

Are the diagonals of a parallelogram always congruent?

Back

No, the diagonals of a parallelogram are not always congruent; they are only congruent in rectangles and squares.

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 relationship between the sides of a parallelogram?

Back

Opposite sides of a parallelogram are equal in length.

Front

How do you find the area of a parallelogram?

Back

Area = base × height.

Front

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

Back

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