- n-gonal
bipyramid Properties convex,
regular polygon faces, isogonal,
translated bases,
sides ⊥
bases Net Example: net of
uniform enneagonal prism (n = 9)...
- In geometry, an n-gonal
antiprism or n-antiprism is a
polyhedron composed of two
parallel direct copies (not
mirror images) of an n-sided polygon, connected...
- 3-aliquot tree, a Wedderburn-Etherington number, the
second non-trivial
enneagonal number,
after 24, a
centered triangular number, the
number of parallelogram...
- In geometry, a bipyramid, dipyramid, or
double pyramid is a
polyhedron formed by
fusing two
pyramids together base-to-base. The
polygonal base of each...
-
distinct forms of a hendecahedron, for
example the
decagonal pyramid, and
enneagonal prism.
Three forms are
Johnson solids:
augmented hexagonal prism, biaugmented...
- In geometry, an n-gonal trapezohedron, n-trapezohedron, n-antidipyramid, n-antibipyramid, or n-deltohedron, is the dual
polyhedron of an n-gonal antiprism...
- in role
playing games,
known as a d10
Truncated square trapezohedron Enneagonal pyramid (9-pyramid) Ten of
diamonds decahedron - a space-filling polyhedron...
- A
nonagonal number, or an
enneagonal number, is a
figurate number that
extends the
concept of
triangular and
square numbers to the
nonagon (a nine-sided...
- A
centered nonagonal number, (or
centered enneagonal number), is a
centered figurate number that
represents a
nonagon with a dot in the
center and all...
-
prism Pentagonal prism Hexagonal prism Heptagonal prism Octagonal prism Enneagonal prism Decagonal prism Hendecagonal prism Dodecagonal prism ... Apeirogonal...
