If a triangle and a parallelogram are on the same base and between the same parallels, then _____.
area of triangle = 12×area of parallelogram
Let △ABP and parallelogram ABCD be on the same base AB and between the same parallels AB and PC. Let h be the height of the triangle and the parallelogram.
Area of △PAB=12×AB×h
Area of parallelogram ABCD=AB×h
Area (△PAB)=12×area of parallelogram ABCD.