It need not have any.
A right triangular prism has 12 pairs but could have 14.
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That would have to be a triangular prism
To find the volume of a triangular prism u have to find the length, width, and height of the prism and then u multiply all of it together
There is no such shape as a perpendicular prism.
9 perpendicular lines
7
How am I supposed to know dorksalot!! Wow u should really know these things!!
1 at the base
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Prisms with any number of sides can have perpendicular faces. Often both end faces are perpendicular to the length. In the case of a REGULAR octagonal prism, there will be four pairs of parallel faces, where each face of a pair will be perpendicular to the two faces of one of the other pairs. There is not much that can be said with certainty about an irregular octagonal prism.
it has five faces
5 faces
they have 4 rectangular
A pentagonal prism has only 7 faces. Each of the five lateral faces is perpendicular to the two bases: that makes 10 pairs of mutually perpendicular faces. In general, the lateral faces are not perpendicular, but four of them may be perpendicular to one or more of its neighbors - at most 4 more pairs. Still not 25!
5 pairs of parallel lines, plus a set of 5 parallels.