Consider a drawing or modeling program in which the unit line segment joining others at its endpoints is the only primitive. Shortcuts for regular polygons. Also including stars, apeirogons. Shortcut for rhombus of useful angles, probably constructing an edge parallel to another one, or complete a rhombus given two edges meeting at a vertex. Shortcut for a polygonal arc between two points.
Higher dimensions (wireframe nets), hyperbolic spaces. Abstract polyhedra.
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