Предмет: Геометрия, автор: pamidorfasasf

три угла четырехугольника равны 140, 60 и 30, найдите четвертый угол

Ответы

Автор ответа: keep7

извиняюсь 1) 140+60+30=230 градусов 3 угла из 4 сумма углов четырехугольника = 360 градусов следовательно 2) 360 - 230= 130 градусов ответ :4 угол четырехугольника равен 130 градусов Р.S. Как-то так)))

Автор ответа: pamidorfasasf

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