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susi131
@susi131
August 2022
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В четырехугольнике ABCD сумма A и C равна 100 градусов.∠B:∠C=2:3.Найдите ∠B и ∠D.
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Ризасана
Допустим отношение углов возьмем за x, тогда угол B=2x, угол D=3x.
Найдем x:
2x+3x+100=360;
5x=260;
x=52;
Угол B=2*52=104, а угол D=3*52=156.
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Answers & Comments
Найдем x:
2x+3x+100=360;
5x=260;
x=52;
Угол B=2*52=104, а угол D=3*52=156.