A parallelogram is a quadrilateral with four sides, in which adjacent sides are parallel to each other. In other words, it is a figure with four sides, in which opposite sides are parallel and equal. A parallelogram can be described by the lengths of its two adjacent sides and the angle between them.

1.the bottom height calculation method

Base height calculation method: the area formula of the parallelogram is S=ah

Where a is the length of the base edge and h is the height.

Specifically, the base edge is one of the sides of the parallelogram. The height is the line segment that goes straight up (or down) from the base edge, perpendicular to it. Its length is referred to as the height of the parallelogram. In notation, the area of the parallelogram is expressed as S = a × h.