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danil2501diukin
@danil2501diukin
August 2022
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помогите решить все по геометр ие 7 класс
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Free0bird0sky
1) ∠COE= ∠AOB-(∠AOE+∠COB)=122°-(19°+23°)=122°-42°=80°
2) ∠AOC-x
∠COB-2x
∠AOB=120°=x+2x=3x
x=120°/3=40°
2x=40°×2=80°
Ответ:∠AOC=40°,∠COB=80°
3) Да потому,что ∠ab=∠ac+∠cb=40°+90°=130°
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danil2501diukin
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Answers & Comments
2) ∠AOC-x
∠COB-2x
∠AOB=120°=x+2x=3x
x=120°/3=40°
2x=40°×2=80°
Ответ:∠AOC=40°,∠COB=80°
3) Да потому,что ∠ab=∠ac+∠cb=40°+90°=130°