Предмет: Геометрия, автор: ivankashirkinovtfq3

50 балов срочно!

Дан треугольник ABC. На продолжениях стороны AB за точку B, стороны BC за точку C и стороны CA за точку A отмечены соответственно точки A1, B1 и C1 так, что AB = BC1, BC = CA1, CA=AB1. Докажите , что отношение площадей ABC и A1B1C1 равно 1:7

Ответы

Автор ответа: vikll
2

Ответ:

Объяснение:

Дан треугольник ABC. На продолжениях стороны AB за точку B, стороны BC за точку C и стороны CA

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