1989 AJHSME Problem 15
Source:
June 25, 2011
geometryparallelogramtrapezoid
Problem Statement
The area of the shaded region in parallelogram is[asy]
unitsize(10);
pair A,B,C,D,E;
A=origin; B=(4,8); C=(14,8); D=(10,0); E=(4,0);
draw(A--B--C--D--cycle);
fill(B--E--D--C--cycle,gray);
label("A",A,SW); label("B",B,NW); label("C",C,NE); label("D",D,SE); label("E",E,S);
label("",(9,8),N); label("",(7,0),S); label("",(4,4),W);
draw((3,0)--(3,1)--(4,1));
[/asy]