parallelograms

By definition, a parallelogram is a quadrilateral with
opposite sides
parallel and equal.

To find the perimeter of a parallelogram, one can either add the lengths of all the sides or use these formulas.

P = 2L + 2W or P = 2 (L + W)

2 x 12 + 2 x 8 = 2(12 + 8) = 40

P = 40 cm

To find the area of a rectangle,
multiply the length times
the width.

To find the area of a parallelogram multiply its base times its height.

To find the perimeter of a square multiply the length
of one side by four.

4 x 5 = 20cm

To find the area of a square multiply the length of one side by itself.

Click here for practice