- In geometry, an
icosahedron (/ˌaɪkɒsəˈhiːdrən, -kə-, -koʊ-/ or /aɪˌkɒsəˈhiːdrən/) is a
polyhedron with 20 faces. The name
comes from
Ancient Gr**** εἴκοσι...
- size. The
other three polyhedra with this
property are the
pentagonal dipyramid, the snub disphenoid, and an
irregular polyhedron with 12
vertices and...
- 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...
-
gyroelongated hexagonal dipyramid ...
Truncated n-gonal
trapezohedron – 2n pentagons, 2 n-gons, dual
gyroelongated dipyramids Diminished trapezohedron...
- an
average bond
length of 3.288 Å. Chains,
comprising alternating Tl2
dipyramids and As tetrahedra, are
linked through corner-sharing at S1 and S2. These...
- In geometry, the
pentagonal bipyramid (or
pentagonal dipyramid) is a
polyhedron with 10
triangular faces. It is
constructed by
attaching two pentagonal...
- In geometry, the
elongated pentagonal bipyramid or
pentakis pentagonal prism is one of the
Johnson solids (J16). As the name suggests, it can be constructed...
-
tetrahedrons face-to-face. The same
shape is also
called the
triangular dipyramid or
trigonal bipyramid. If
these tetrahedrons are regular, all
faces of...
- In geometry, the
gyroelongated bipyramids are an
infinite set of polyhedra,
constructed by
elongating an n-gonal
bipyramid by
inserting an n-gonal antiprism...
- In geometry, the
elongated bipyramids are an
infinite set of polyhedra,
constructed by
elongating an n-gonal
bipyramid (by
inserting an n-gonal
prism between...
