Special Parallelograms

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 rhombus?

Back

A rhombus is a parallelogram with all four sides of equal length and opposite angles that are equal.

Front

What is a rectangle?

Back

A rectangle is a parallelogram with four right angles.

Front

What is a square?

Back

A square is a parallelogram with all sides equal and all angles equal to 90 degrees.

Front

How do you find the area of a rectangle?

Back

Area = length × width.

Front

How do you find the area of a rhombus?

Back

Area = (diagonal1 × diagonal2) / 2.

Front

What is the relationship between the angles in a parallelogram?

Back

Opposite angles are equal, and consecutive angles are supplementary (add up to 180 degrees).

Front

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

Back

The opposite angle is also 70 degrees, and the other two angles are 110 degrees each.

Front

What is the diagonal property of a rectangle?

Back

The diagonals of a rectangle are equal in length and bisect each other.

Front

What is the diagonal property of a rhombus?

Back

The diagonals of a rhombus are perpendicular to each other and bisect the angles.