Square antiprism (EntityTopic, 13)
From Hi.gher. Space
(Difference between revisions)
m (K6.4 upgrade: img -> embed) |
m (ontology) |
||
| Line 1: | Line 1: | ||
| + | <[#ontology [kind topic] [cats 3D Uniform Polytope Antiprism]]> | ||
{{STS Shape | {{STS Shape | ||
| name=Square antiprism | | name=Square antiprism | ||
Revision as of 23:12, 11 February 2014
The square antiprism is a special case of an antiprism where the base is a square.
Geometry
- The planar cross-sections of a square antiprism in the [!z] plane are octagons, giving a regular octagon in the middle and degenerating to squares at the ends.
- The planar cross-sections of a square antiprism in the [!x] and [!y] planes are irregular pentagons, degenerating to trapeziums in the middle and at the ends.
| Notable Trishapes | |
| Regular: | tetrahedron • cube • octahedron • dodecahedron • icosahedron |
| Direct truncates: | tetrahedral truncate • cubic truncate • octahedral truncate • dodecahedral truncate • icosahedral truncate |
| Mesotruncates: | stauromesohedron • stauroperihedron • stauropantohedron • rhodomesohedron • rhodoperihedron • rhodopantohedron |
| Snubs: | snub staurohedron • snub rhodohedron |
| Curved: | sphere • torus • cylinder • cone • frustum • crind |
