A 20-sided polygon is called an icosagon. In geometry, a polygon with n sides has n vertices. Therefore, a 20-sided polygon would have 20 vertices. Each vertex represents a point where two sides of the polygon intersect.
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Polygons have the same number of vertexes/vertices as the sides. So, A 20 sided polygon will have 20 vertexes/vertices.
20, because a polygon has the same number of sides and vertices.
A polygon has the same amount of vertices as it does sides, so it would have 7 vertices.
Twelve. The number of sides and vertices in a polygon are always the same.
It has 20 vertices.
it has 12 vertices