One.
one, the cone
a cuboid
a cone
the difference between a cone and a prism is that a cone has no edges and only one vertex and a prism has both edges and vertexes.
8 vertexes
Not sure about vertexes or prisim. A rectangular prism, on the other hand, has 8 vertices. Not vertexes.
A cylinder has no vertices (not vertexes!) It has 2 circular edges.
6 edges 4 vertexes
there are 2 Faces on a cone, there is a technically immeasurable amount of corners, because the ca just keep cutting the angle finer and finer on the circular end and making more corners. though you'll get your bottom whipped if you say this to your teacher, the amount of vertexes on a cone is: 1+(∞)
A cone has infinitely many symmetries. This is because a cone can be rotated about its axis an infinite number of times and still look the same. Additionally, a cone also has rotational symmetry, meaning that it looks the same when rotated by any multiple of 360 degrees.
4