Properties of Parallelograms/Quadrilaterals - never, sometimes, always

Front

What is a parallelogram?

Back

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

Front

What are the properties of a parallelogram?

Back

1. Opposite sides are congruent. 2. Opposite angles are congruent. 3. The diagonals bisect each other.

Front

Are all squares parallelograms?

Back

Always. A square is a specific type of parallelogram with all sides equal and all angles right.

Front

Are all rectangles parallelograms?

Back

Always. A rectangle is a type of parallelogram with four right angles.

Front

Are all rhombuses parallelograms?

Back

Always. A rhombus is a type of parallelogram with all sides equal.

Front

What is the relationship between the diagonals of a parallelogram?

Back

The diagonals of a parallelogram bisect each other.

Front

What does it mean for angles to be congruent?

Back

Congruent angles have the same measure.

Front

Can a rhombus be a square?

Back

Sometimes. A rhombus is a square if it has four right angles.

Front

What is a quadrilateral?

Back

A quadrilateral is a polygon with four sides.

Front

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

Back

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