octagon

cube a solid object with six square sides of equal size...

deltoid curve a hypocycloid of three cusps. In other words, it is the roulette created by a point on...

icosagon or 20-gon, is a twenty-sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.

oval having a rounded and slightly elongated outline or shape like that of an egg.

superellipse a closed curve resembling the ellipse, retaining the geometric features of semi-major axis and semi-minor axis, and symmetry...

square pyramid a pyramid having a square base. If the apex is perpendicularly above the center of the square,...

Amman tiling is an aperiodic set of two tiles and a foursome of ‘golden rhombohedra’, which form aperiodic tilings...

grid a framework of spaced bars that are parallel to or cross each other; a grating.