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Parallelogram

A parallelogram is a quadrilateral with two pairs of parallel sides. Opposite sides are equal in lengh and opposite angles are equal in measure.
The sum of the measures of the angles of a parallelogram is 360.

(Squares, rectangles and rhombus are particular types of parallelograms).

Area of a paralellogram

A=b·h where b is the base and h is the height.

Find the area:

A=b·h
A=8·6=48 units²

Find the area of the parallelogram where: The sum of the base and the altitude is 22and the base is 21.

Area= units²