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Online now Злобный Ящур
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#871
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Heh, but basically, nothing is said about the plane...
If the polygon is not flat, then the intersection of all its sides is impossible, because a straight line intersecting two of its sides lies entirely in the plane of these sides and cannot intersect sides lying in other planes.
So, of course, it refers to a flat 111-sided polygon.

Ничто не возникает из ничего и ничто не пропадает бесследно.
Если где-то чего-то убудет, то в другом месте добавится.
(Закон сохранения).

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