How to do 20 1 1 math problem in Guilin senior high school entrance examination 18? thank you
The meaning of the question is equal to 60 respectively. Finally, the AP, PB equilateral △AEP and equilateral △PFB of line segment AB of point G where E and F coincide have the same side of ∠EAP and ∠FBP to get a larger equilateral triangle, and then the length of the moving path of point G is calculated.