- In geometry, a
heptagon or
septagon is a seven-sided
polygon or 7-gon. The
heptagon is
sometimes referred to as the septagon,
using "sept-" (an elision...
- Gea
heptagon is a
species of orb
weaver spiders in the
family Araneidae. It is
found in
Pacific islands and Australia, and has been
introduced into the...
- A
heptagonal number is a
figurate number that is
constructed by
combining heptagons with
ascending size. The n-th
heptagonal number is
given by the formula...
- A
centered heptagonal number is a
centered figurate number that
represents a
heptagon with a dot in the
center and all
other dots
surrounding the center...
- geometry, a
heptagonal triangle is an obtuse,
scalene triangle whose vertices coincide with the first, second, and
fourth vertices of a
regular heptagon (from...
- In geometry, the
heptagonal antiprism is the
fifth in an
infinite set of
antiprisms formed by two
parallel polygons separated by a
strip of triangles....
- In geometry, the
heptagonal prism is a
prism with
heptagonal base. This
polyhedron has 9
faces (2
bases and 7 sides), 21 edges, and 14 vertices. The area...
- geometry, a
heptagonal tiling is a
regular tiling of the
hyperbolic plane. It is
represented by Schläfli
symbol of {7,3},
having three regular heptagons around...
- seven-sided
shape is a
heptagon. The
regular n-gons for n ⩽ 6 can be
constructed by comp**** and
straightedge alone,
which makes the
heptagon the
first regular...
- Aemeth) is a
magical diagram,
composed of two circles, a pentagram, two
heptagons, and one heptagram, and is
labeled with the
names of God and its angels...
