02.04.2022

Один из углов некоторого пятиуглльника равен среднее арифметическому четырех остальных углов. Чему равен этот угол?

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Один из углов некоторого пятиуглльника равен среднее арифметическому четырех остальных углов. Чему равен этот угол?

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