|Bowers style acronym||Dag|
|Symmetry||I2(10), order 20|
|Vertex figure||Dyad, length √|
|Measures (edge length 1)|
|Number of pieces||20|
|Level of complexity||2|
The decagram, or dag, is a star polygon with 10 sides. A regular decagram has equal sides and equal angles.
It is the uniform quasitruncation of the pentagram, and as such appears frequently in uniform polyhedra and polychora. It is the largest uniform star polygon to appear in a non-prismatic uniform polytope in 3 or 4 dimensions.
Vertex coordinates[edit | edit source]
Coordinates for a decagram of unit edge length, centered at the origin, are:
Representations[edit | edit source]
A decagram has the following Coxeter diagrams:
- x10/3o (full symmetry)
- x5/3x (H2 symmetry)
[edit | edit source]
- Bowers, Jonathan. "Regular Polygons and Other Two Dimensional Shapes".