Предмет: Геометрия, автор: gosuslugihmao

Легкие задачи по геометрии. Даю 20 баллов

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Автор ответа: yoongi45
1

2) верно, ТК если прямая параллельна одной параллельной, значит она также параллельна и третьей

Автор ответа: GGmonster
1
1) так как сd=ab и ad=bc, а ac-общая. то треугольники abc = adc, значит углы cad=acb. значит прямые параллельны(т.к. накрест лежащие углы равны)

2) Да равны т.к. если две прямые параллельны одной, то эти прямые параллельны
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