The names of the
polygons in the
plane.
Number of
sides, the shape name, then the internal
angle (=(180 - 360/number of sides)).
3:
Triangle 60
4:
Square 90
5:
Pentagon 108
6:
Hexagon 120
7:
Heptagon 128.57..
8:
Octagon 135
9:
Nonagon aka
enneagon 140
10:
Decagon 144
11:
hendecagon aka
undecagon 147.27..
12:
Dodecagon 160
13:
triskaidecagon
14:
tetrakaidecagon
15:
pentakaidecagon
16:
hexakaidecagon
17:
heptakaidecagon
18:
octakaidecagon
19:
enneakaidecagon
20:
icosagon
30:
tricontagon
40:
tetracontagon
50:
pentacontagon
60:
hexacontagon
70:
heptacontagon
80:
octacontagon
90:
enneacontagon
100:
Hectagon 176.4
1000:
Chiliagon 179.64
10000:
Myriagon 179.964
10
6:
Megagon 179.99964
10
100:
Googolgon ~180
/msg me with more.