12
12
In 2D, the only figure would be some type of dodecagone. In 3D however, there are many possibilities. One of them is the decagonal bipyramid
a crescent has 19 sides
how many sides does an polygonshave
10 sides.
There is no formula for how many sides there are in a polygon; the name of the polygon shows how many sides it has.
How many sides does a Decahedron Have
3Three.
"no" sides.
Polygon means "many sides."
4 sides