inversive geometries
A game wherein a player places his hand on a surface and tries to quickly stab the spaces between the fingers using a knife.
plural of contumely
(historical) A person hired to remove dust and debris from yards, etc.
plural of inversive geometry
いくつかの反転幾何学は、平面上のさまざまな種類の円の反転を表現することができる。
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