Archive for category: Geometry

square a flat shape with four sides of equal length and four angles of 90°

triangular prism A triangular prism is a three-sided prism; it is a polyhedron made of a triangular base, a...

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

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

ellipse a curve in a plane surrounding two focal points such that the sum of the distances to the...

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

Archimedean spiral The Archimedean spiral, or arithmetic spiral, is a spiral named after the 3rd century BC Greek mathematician...

arbelos is a plane region bounded by three semicircles connected at the corners, all on the same side of...

star polygon is a type of non-convex polygon. A regular star pentagon, {5/2}, has five corner vertices and intersecting...

decagon is a ten-sided polygon or 10-gon. A regular decagon has all sides of equal length and each internal...