Предмет: Геометрия, автор: Violettagerberg

paralT2rBezB.PNG Известно, что две параллельные прямые пересечены третьей прямой.
Если угол 5 = 160°,то угол 3 = ... °

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Ответы

Автор ответа: khotienkos
7
Так как прямые параллельны, то угол 5 равен углу 1
Тогда так как угол 3 и угол 1 это 180 градусов, то угол 3 равен 180-160=20
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