Answer
Parallelogram is a type of polygon with four number of sides in which opposite sides are parallel and equal.
Work Step by Step
A parallelogram is a special type of polygon with four sides with opposites sides parallel and is of equal length. Also, the opposite angles of a parallelogram are of equal measure. The rhombus is a closed figure with four sides in which all sides are equal in length, which proves that the rhombus is a parallelogram.
A rectangle is a closed figure with four sides with all four right angles, which proves that the rectangle is a parallelogram, because in parallelogram if one angle is a right angle, then every other angle must be a right angle.
