Segments $\overline{CD}$ and $\overline{AB}$ are parallel. If $CD=2,AB=5,$ and $[CDP]=4,$ find $[ABCD].$
Let M and N be the midpoints on CD and AB.
MP = 8 / 2 = 4
PN = 4 * AN = 10
Height H = 14
[ABCD] = (AB + CD)/2 * H = 49 square units
