✨ Best Answer ✨
∠AOC=120°より
∠ADC=60°
∠ADC=∠ADB+∠BDC
∠ADB=∠BDCより
60°÷2=30°
なので、30°で正解です
Answers
Answers
Were you able to resolve your confusion?
Users viewing this question
are also looking at these questions 😉
✨ Best Answer ✨
∠AOC=120°より
∠ADC=60°
∠ADC=∠ADB+∠BDC
∠ADB=∠BDCより
60°÷2=30°
なので、30°で正解です
Users viewing this question
are also looking at these questions 😉
ご丁寧に😊ありがとうございます！