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Автор - malinas063

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Ответ

Автор - Komno

1) угол KOB= 180- 140=40

в ∆КВО угол КВО=90-40=50 следовательно угол В =100

2) углы А и С равны, А+С= 180-100=80

угол А=С=40

Ответ: угол В= 100, угол А=С= 40.

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