Assertion: parallelogram's side | /r/HasProperty | the parallelogram's base
Facets:
Source sentences:
text: The formula is actually the same as that for a rectangle, since it the area of a parallelogram is basically the area of a rectangle which has for sides the parallelogram's base and height.
text: The two parallel sides are known as the bases of a parallelogram, with the distance between the pair referred to as the height.