Solving Parallelograms and Rectangles

Front

What is a rectangle?

Back

A rectangle is a quadrilateral with four right angles and opposite sides that are equal in length.

Front

What is a parallelogram?

Back

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

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width).

Front

How do you find the length of a side in a rectangle if the area and one side length are known?

Back

Length = Area ÷ width.

Front

What is the relationship between the opposite angles of a parallelogram?

Back

Opposite angles of a parallelogram are equal.

Front

What is the formula for the area of a parallelogram?

Back

Area = base × height.

Front

What is the formula for the perimeter of a parallelogram?

Back

Perimeter = 2(base + side length).

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 adjacent angles are 110 degrees each.

Front

What is the significance of the diagonals in a parallelogram?

Back

The diagonals of a parallelogram bisect each other.