Ответ:
B=180°-(42°+34°)=180°-76°=104°
D=B=104°
BAD=180°-104°=76°
BCD=BAD=76°
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Ответ:
B=180°-(42°+34°)=180°-76°=104°
D=B=104°
BAD=180°-104°=76°
BCD=BAD=76°