Octagonal prism.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. 18 edges, 8 faces
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. 6 faces, 8 vertices, 12 edges.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. 18, 12, 8
A trapezoid prism has 12 edges, 8 vertices, 6 faces and normally its base is at ground level.
A rectangular prism has 12 edges and 8 vertices.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. 1 base, 8 vertices
An octagon based prism.
8 edges
There are 12 edges and 8 corners in a rectangular prism
A rectangular prism has 12 edges and 8 vertices.
A prism with an n-sided base will have 2n vertices, n + 2 faces, and 3n edges. Your figure is a quadrilateral-based prism.