Browse · MATH Print → jmc geometry intermediate Problem Points A,B,C and D have these coordinates: A(3,2), B(3,−2), C(−3,−2) and D(−3,0). What is the area of quadrilateral ABCD? Solution — click to reveal Trapezoid ABCD has bases 2 and 4 with altitude 6. Using the formula: A=2h(b1+b2), the area is 26(2+4)=18. Final answer 18 ← Previous problem Next problem →