数学中考大纲的一道题(宁波的)~ ~ 解:(1)因为∠ Abe = 30,BE = DE。所以∠ ADB = 30设AE =x BE =DE=2x AB =√3x BD=2√3x因为PQ∨BD,EP/ED=PQ/BD是(2x-1)/2x=3√3/2√3x,所以x=2,所以AB。(2) PE = 4-2√3存在