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?
~$\frac{1}{3}$~
~$\frac{\sqrt{2}}{4}$~
~$\frac{1}{2}$~
~$\frac{\sqrt{2}}{2}$~
~$\frac{3}{4}$~
这题耗时有点久了,延展BC, 并让E做垂线与BC延长线垂直相交,即可得到一个等腰直角三角形。然后利用斜边算边长,然后计算体积
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