i do no konw
A ten-sided polygon is called a decagon.
The name of a 10 sided polygon is Decagon.
A ten sided polygon is called a Decagon.
A ten-sided polygon is called a decagon.
Decagon
Decagon
decagon
A decagon.
decagon
A decagon
Without careful, precise, lab-grade measurement, anyone who looked at it would call it a "circle".
A plane figure bounded by some numbers of straight sides is called a polygon. Thus a polygon with ten-sided is called a decagon.