Given
points in the plane such that no three of the points are collinear. Does there exist a circle passing through (at least)
of the given points and not containing any other of the
points in its interior ?
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Given $n>3$ points in the plane such that no three of the points are collinear. Does there exist a circle passing through (at least) $3$ of the given points and not containing any other of the $n$ points in its interior ?