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Теорема Дезарга. Dezarg theorem
Вам предстоит познакомиться с фундаментальной теоремой проективной геометрии.
Сколько точек содержит конфигурация Дезарга?
Сколько прямых?
Что может полностью определить всю дезаргову конфигурацию?