A triangular prism has 6 edges and so an octagonal prism will have 16 edges.
Chat with our AI personalities
A triangular based prism has 6 vertices and 9 edges.
9 edges
Well you have an octagon on each end of the prism, and octagons have 8 sides, so 8 x 2 is 16, and then you have edges connecting the corners of the octagons at the end. There are 8 corners in an octagon, so that's 8 more edges. 16 + 8 = 24 total edges. An n-gonal prism has 3n edges.
6 edges 4 vertexes
If the prism is based on regular decagons and it is a right prism, all 12 faces.