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7 (number)
Ϫ (number)
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Megagon
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Regrouping
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Ϫ (number)
-1(number)
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Tetracontagon
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A
Tetracontagon
is a 40 sided
polygon
with 40 angles.
v
t
e
Regular polygons
Listed by number of sides
1–10 sides
Henagon (Monogon)
Digon
Equilateral triangle
Square
Pentagon
Hexagon
Heptagon
Octagon
Nonagon (Enneagon)
Decagon
11–20 sides
Hendecagon
Dodecagon
Tridecagon
Tetradecagon
Pentadecagon (Quindecagon)
Hexadecagon
Heptadecagon
Octadecagon
Enneadecagon (Nonadecagon)
Icosagon
30-90
Triacontagon
Tetracontagon
Pentacontagon (Quincontagon)
Hexacontagon
Heptacontagon
Octacontagon
Enneacontagon (Nonacontagon)
Others
Hectogon (Hecatontagon)
Chiliagon
Myriagon
Megagon
Apeirogon
Star polygons
Pentagram
Hexagram
Heptagram
Octagram
Enneagram
Decagram
Hendecagram
Dodecagram
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