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prettypushkova
@prettypushkova
July 2022
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В трапеции АВСD известно, что АВ = CD, угол BDA = 22 градуса и угол BDC = 45 градусов. Найдите угол АВD.
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shakha2017
Verified answer
∠ADC=∠BDA+∠BDC=22+45=67°
∠BAD=∠ADC=67°
∠ABD=180°-(∠BAD+∠BDA)=
=180-67-22=91°
4 votes
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prettypushkova
Спасибо!
shakha2017
Не за что!
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Verified answer
∠ADC=∠BDA+∠BDC=22+45=67°∠BAD=∠ADC=67°
∠ABD=180°-(∠BAD+∠BDA)=
=180-67-22=91°