**geometry**

### triangular prism

triangular prism
A triangular prism is a three-sided prism; it is a polyhedron made of a triangular base, a translated copy, and 3 faces joining...

### square pyramid

square pyramid
a pyramid having a square base. If the apex is perpendicularly above the center of the square, it will have C4v symmetry...

### superellipse

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

### deltoid curve

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

### Archimedean spiral

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

### star polygon

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

### golden section

golden section
golden rectangle or golden mean, is the division of a line so that the whole is to the greater part as that part...

### tetrahedron

tetrahedron
in geometry, a tetrahedron, also known as a triangular pyramid, is a polyhedron composed of four triangular faces, six straight edges, and four vertex...

### hexadecagon

hexadecagon
hexakaidecagon, or 16-gon is a sixteen-sided polygon. A regular hexadecagon is a hexadecagon in which all angles are equal and all sides are congruent...

### hendecagon

hendecagon
undecagon, endecagon, or 11-gon is an eleven-sided polygon. A regular hendecagon has internal angles of 147.27 degrees...

### Voronoi diagram

Voronoi diagram
is the division of a space into contiguous neighbouring cells. The cells relate to a set of points ( Voronoi sites) in that...

### Weaire-Phelan model

digital
artistic work using digital technology as an essential part of the creative or presentation process…

### Amman tiling

Amman tiling
is an aperiodic set of two tiles and a foursome of ‘golden rhombohedra’, which form aperiodic tilings in three dimensions. The best-known Ammann...

### irregular shape

irregular shape
a polygon that does not have all sides equal and all angles equal...