∵菱形对角线平分角、邻角互补∴∠ABD=∠ABC/2 =(180°-∠BAD)/2 =(180°-100°)/2 =80°/2 =40°∠BAE=(∠BAD-∠EAF)/2 =(100°-60°)/2 =40°/2 =20°
ABD=40°EAF=20°
不会............