The triangle above has side DC of the square as its base. What is the ... ...

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The triangle above has side DC of the square as its base. What is the area of the shaded region?

(1) DM = 5

(2) M is the midpoint of side AB.


(A) if statement (1) ALONE is sufficient to answer the question but statement (2) alone is not sufficient;
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in Exercise Set D