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Angle
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angle ( Vector_2<Kernel> u, Vector_2<Kernel> v)
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returns OBTUSE, RIGHT or ACUTE depending
on the angle formed by the two vectors u and v.
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Angle
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angle ( Point_2<Kernel> p, Point_2<Kernel> q, Point_2<Kernel> r)
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returns OBTUSE, RIGHT or ACUTE depending
on the angle formed by the three points p, q, r (q being the vertex of
the angle). The returned value is the same as angle(p - q, r - q).
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Angle
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angle ( Point_2<Kernel> p, Point_2<Kernel> q, Point_2<Kernel> r, Point_2<Kernel> s)
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returns OBTUSE, RIGHT or ACUTE depending
on the angle formed by the two vectors pq, rs. The returned value is
the same as angle(q - p, s - r).
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Angle
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angle ( Point_3<Kernel> p, Point_3<Kernel> q, Point_3<Kernel> r)
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returns OBTUSE, RIGHT or ACUTE depending
on the angle formed by the three points p, q, r (q being the vertex of
the angle).
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