It is not a prism, and there is no such thing as a prisam.
A pentagonal prism has 15 edges.
The octagonal pyramid has 9 vertices.
is a sphere a prisam
Yes.
Not sure about vertacies, but there are 6 vertices on a hexagon.
Assuming that vertacies is your attempt to spell vertices, the number of vertices in an octahedron can range from 6 to 12.
It is not a prism, and there is no such thing as a prisam.
A triangle has no prisms.
10.
A triangular prism has 5 faces.
A rectangular prism has 6 faces.
A triangular prism has 9 edges.
A rectangular prism has 8 vertices.
A pentagonal prism has 15 edges.
An octagonal shape has 8 sides
"Octagonal" is an adjective. That is not enough information. Is it an octagonal prism, octagonal pyramid, octagonal bipyramid or something else? Each one would lead to a different answer.