In the figure, each side of square ABCD has length 1, the length of line segment CE is 1, and the length of line segment BE is equal to the length of line segment DE. What is the area of the triangular region BCE?
~$\frac{1}{3}$~
~$\frac{\sqrt{2}}{4}$~
~$\frac{1}{2}$~
~$\frac{\sqrt{2}}{2}$~
~$\frac{3}{4}$~
从已知条件中可以得出area of BCE 肯定小于 1/2. 所以只能从 A 或 B 中选。B 比 A 看着更靠谱些。:)
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