Предмет: Математика, автор: nastyazmushko1

abca1b1c1 правильная треугольная призма.1)назовите все ребра,параллельные ребру AA1.2)назовите грань,параллельную грани A1B1C1.3)Назовите прямые,скрещивающиеся с прямой A1B1

Ответы

Автор ответа: ghjbyb49

1)ребруАА1 параллельны рёбра ВВ1 и СС1
2) гранью параллельной грани А1В1С1 является грань АВС
3) с прямой А1В1 скрещиваются прямые ВС, АС и СС1

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