15
Chat with our AI personalities
3
A 6 sided hexagon has 6 vertices and so 3 hexagons will have 3*6 = 18 vertices
You cannot make a hexagon out of rectangles and so you will never be able to make the two bases of the hexagonal prism. And these two hexagons, after all, are what give the shape its name.
A sphere has no corners, it is a 3-D circle.
Add one to a hexagons number of vertices