如图,四边形ABCD和四边形AECF都是菱形,点E,F在BD 上,已知角BAD=100

2025-06-23 09:57:29
推荐回答(3个)
回答1:

∵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°

回答2:

ABD=40°
EAF=20°

回答3:

不会............