A ten sided decagon has 10 vertices
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A decagon has 10 vertices.
A decagon has 10 vertices and 10 sides.It has ten cornersA decagon is a 10 sided polygon that has 10 vertices
Ten.
12 faces, 30 edges and 20 vertices. It has 2 decagons plus 10 rectangles between them giving 12 faces It has 2 x 10 vertices on each decagon giving 20 vertices It has 10 edges round each decagon plus another 10 joining the vertices of one decagon to the other decagon's vertices giving 2x10+10 = 30 vertices
12 points * * * * * A decagon has 10 vertices (points) and 10 sides. A polygon with 12 is a dodecagon.