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Unformatted text preview: rays always form a line. & are opposite rays B C BA BC 2 lines that do not intersect are either parallel or skew . Parallel lines ( lines) do not intersect and are coplanar. Skew lines do not intersect and are not coplanar. Parallel planes ( planes) do not intersect. Plane X is parallel to plane Y A line and a plane are parallel if they do not intersect. X Y H G D E A B C F EF plane Y...
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 Fall '10
 Towns
 Geometry

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