Enneagonal antiprism
Encyclopedia
In geometry
, the enneagonal antiprism is one in an infinite set of convex antiprisms formed by triangle sides and two regular polygon
caps, in this case two enneagon
s.
Geometry
Geometry arose as the field of knowledge dealing with spatial relationships. Geometry was one of the two fields of pre-modern mathematics, the other being the study of numbers ....
, the enneagonal antiprism is one in an infinite set of convex antiprisms formed by triangle sides and two regular polygon
Polygon
In geometry a polygon is a flat shape consisting of straight lines that are joined to form a closed chain orcircuit.A polygon is traditionally a plane figure that is bounded by a closed path, composed of a finite sequence of straight line segments...
caps, in this case two enneagon
Enneagon
In geometry, a nonagon is a nine-sided polygon.The name "nonagon" is a prefix hybrid formation, from Latin , used equivalently, attested already in the 16th century in French nonogone and in English from the 17th century...
s.