GWD31-第二套math-30题,求助!

Q30:

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?

A.     1/3

B.     (Ö2)/4

C.     1/2

D.     (Ö2)/2

E.      3/4

怎么想也想不明白,各位帮帮忙?

图形怎么也沾不上去,咋办?

由于三条边相等，BCE,DCE两个三角形全等

那么E就在AC延长线上

设正方形重点是O，那么面积就是1/2*BO*CE,答案：B