1. а) ∠ВОD = 40°
2. b) ∠КОС = 60°
3. b) ∠BOH=50° ∠COB=130° ∠AOH=130°
4. а) ∠ВОС=80°
5. b) ∠(hk) =70° ∠(kl)=110°
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Answers & Comments
1. а) ∠ВОD = 40°
2. b) ∠КОС = 60°
3. b) ∠BOH=50° ∠COB=130° ∠AOH=130°
4. а) ∠ВОС=80°
5. b) ∠(hk) =70° ∠(kl)=110°