Because usually the measure of interest is the vertical height, not the slant height.
base x height.
Area = length*perpendicular height
Such a figure is called a rhombus.
sometimes
Measure the length of the "lowest" side.
Multiply the height by the length of the base.a = h x b
24 square feet.
parallelogram is a special kind of quadrilateral which, in turn, is a special kind of polygon and that is a closed planar figure.
Yes, any two angles in a parallelogram that share a common side are supplementary.
The base is the bottom of the figure and the height is how tall the figure is.
It is: 5*10 = 50 square units
70 square inches