求助--JJ-ANSWER (SQUIRE2)/4

crack25

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?


ps:关于这道题我的关注点是为什么大家都认为（附件）图上的角BCE是135？？这个能不能具体说一下方法！

郁闷中，search ~根本就没有说清楚角BCE=135怎么算的
求助——————
图形中顺序是A上面是B,这样循环成了ABCD