Prismatic surface

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A prismatic surface is a surface generated by all the lines that are parallel to a given line and intersect a broken line that is not in the same plane as the given line.[1] The broken line is the directrix of the surface; the parallel lines are its generators (or elements). If the broken line is closed (i.e., a closed polygon), then the surface is a closed prismatic surface.

With regards to crystallography, a prismatic surface is a single face of a prismatic form, which is an open form consisting of three, four, or six identical faces related by a symmetry operator.[citation needed]

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  1. ^ Velichová, Daniela. "Views of pyramidal (prismatic) surfaces". Slovenia: European Virtual Laboratory of Mathematics. Retrieved 11 June 2013. {{cite web}}: External link in |publisher= (help)