Why is a dodecagon called what it is?

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2 Answers

Try to find out at google
by Level 4 User (7.9k points)
Umm, well after creating "decagon" (which has 10 sides), they started adding

prefixes after decagon:

11 sided shape:hendecagon  

12 sided shape:dodecagon
by Level 9 User (42.6k points)

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