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Area of Quadrilateral in Rectangle

Source: 2012 AMC10B Problem #19

February 23, 2012
geometryrectangleAMCAMC 10AMC 10 Banalytic geometrysimilar triangles

Problem Statement

In rectangle ABCDABCD, AB=6AB=6, AD=30AD=30, and GG is the midpoint of AD\overline{AD}. Segment ABAB is extended 22 units beyond BB to point EE, and FF is the intersection of ED\overline{ED} and BC\overline{BC}. What is the area of BFDGBFDG?
<spanclass=latexbold>(A)</span> 1332<spanclass=latexbold>(B)</span> 67<spanclass=latexbold>(C)</span> 1352<spanclass=latexbold>(D)</span> 68<spanclass=latexbold>(E)</span> 1372 <span class='latex-bold'>(A)</span>\ \frac{133}{2}\qquad<span class='latex-bold'>(B)</span>\ 67\qquad<span class='latex-bold'>(C)</span>\ \frac{135}{2}\qquad<span class='latex-bold'>(D)</span>\ 68\qquad<span class='latex-bold'>(E)</span>\ \frac{137}{2}