- In geometry, a
pentadecagon or
pentakaidecagon or 15-gon is a fifteen-sided polygon. A
regular pentadecagon is
represented by Schläfli
symbol {15}. A regular...
-
sides Dodecagon – 12
sides Tridecagon – 13
sides Tetradecagon – 14
sides Pentadecagon – 15
sides Hexadecagon – 16
sides Heptadecagon – 17
sides Octadecagon...
- polygon, by an edge-bisection of a
regular pentadecagon, and can also be
constructed as a
truncated pentadecagon, t{15}. A
truncated triacontagon, t{30}...
- is the
product of
distinct Fermat primes, 3 and 5; hence, a
regular pentadecagon is
constructible with a comp**** and
unmarked straightedge, and cosπ15{\displaystyle...
- plane-vertex
alongside two
regular pentagons, and
alongside a fifteen-sided
pentadecagon and triangle. The
decagon is the hemi-face of the icosidodecahedron,...
-
tridecagon (or triskaidecagon) 13
tetradecagon (or tetrakaidecagon) 14
pentadecagon (or pentakaidecagon) 15
hexadecagon (or hexakaidecagon) 16 heptadecagon...
- Isogonal, p14 Isogonal, p14 Isogonal, p14 Irregular, d2
Direct equiangular pentadecagons, <15>, <15/2>, <15/3>, <15/4>, <15/5>, <15/6>, and <15/7>, have 156°...
-
dodecagon 13
tridecagon triskaidecagon 14
tetradecagon tetrakaidecagon 15
pentadecagon pentakaidecagon 16
hexadecagon hexakaidecagon 17
heptadecagon heptakaidecagon...
-
bases 25, 38, 51, 77, and 155. 156
degrees is the
internal angle of a
pentadecagon.
Convoy HX-156 was the 156th of the
numbered series of
World War II HX...
-
Tridecagon Tetradecagon Schläfli {9} {10} {11} {12} {13} {14}
Image Name
Pentadecagon Hexadecagon Heptadecagon Octadecagon Enneadecagon Icosagon ...n-gon Schläfli...
