If the heights and bases are the same, then the triangle is half the area of the parallelogram.
The formula for the area of a trapezoid is A = 1/2 (b1 + b2)/h where b1 is the upper base of the trapezoid , b2 is the lower base of the trapezoid and h is the height of the trapezoid. Since a...
A base is normally a line and therefore has no area;the area of a triangle is half of base x altitude.
rectangle
a triangle has 4 sides and a parallelogram has 3 obviously they have different areas silly goose. I would know i go to harvard math