the correct answer is dedecagon that's what I've know since i was in grade 4 but I'm not sure about that answer
bea patrice de Castro,
a grade 5 student
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the 11 sided polygon is undecagon
The name of a 11 sided polygon is Hendecagon.
The name of a 11 sided polygon is Hendecagon.
An 11 sided polygon has 44 diagonals.
11