A triangle.
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A triangle is the simplest polygon with three vertices and 3 sides. A dodecahedron has 12 vertices and 12 sides. There is no limit to the number of vertices and sides that a polygon can have - except that the two numbers must be the same.
Fourteen. Each polygons has the same number of sides as it has vertices. Therefore, a polygon with 14 vertices must have 14 sides.
A polygon with 5 sides/vertices is called a pentagon.
12 sides, 12 angles, 12 vertices
19. sides=vertices