Three or more depending on the figure.
sides - shape name
3 - Triangle
4 - Quadrilateral
5 - Pentagon
6 - Hexagon
7 - Heptagon
8 - Octagon
9 - Nonagon
10 - Decagon
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There is no formula for how many sides there are in a polygon; the name of the polygon shows how many sides it has.
It will have 12 sides
how many diagonals are there iin a polygon of 11 sides
A polygon has as many angles as sides, so a polygon with 10 sides (decagon) would have 10 angles.
A polygon must have at least three sides.