(1)∵∠COD=∠AOD-∠AOC
∴∠COD=120°-60°
=60°
答:∠COD为60°
(2)∵∠2=2∠1=60° ∴∠1=二分之一∠2 =二分之一*60 =30° ∵∠BOD=∠1+∠2+∠COD
∴∠BOD=30°+60°+60°
=150°
答:∠BOD为150°
绝对正确
打得很累呀,请求评为正解(*^__^*)
(1)∵∠COD=∠AOD-∠AOC
∴∠COD=120°-60°
=60°
答:∠COD为60°
(2)∵∠2=2∠1=60° ∴∠1=二分之一∠2 =二分之一*60 =30° ∵∠BOD=∠1+∠2+∠COD
∴∠BOD=30°+60°+60°
=150°
答:∠BOD为150°
绝对正确
打得很累呀,请求评为正解(*^__^*)