Two pairs
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Well, honey, a square-based pyramid has 1 pair of parallel edges. The base edges are parallel to each other, but the slant height edges are not parallel to any other edges. So, there you have it, just one pair, case closed.
Oh, dude, a square-based pyramid has 4 pairs of parallel edges. I mean, it's right there in the name, square, like four sides, four pairs of parallel edges. It's like the pyramid is just chilling, being all symmetrical and stuff.
A square-based pyramid has four pairs of parallel edges. Each pair consists of two edges that are parallel to each other and do not intersect. These pairs of parallel edges are formed by the four edges of the square base and the four triangular lateral edges of the pyramid.
Its base has 2 pairs of opposite parallel edges and it has 5 faces, 8 edges and 5 vertices.
Only the base can have parallel edges since all other faces are triangular. So, at most one face.
A triangular-based pyramid, also called a tetrahedron, has no parallel faces, but has 4 faces, 6 edges and 4 vertices
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Well, honey, an heptagonal prism has 7 faces, and each face has 2 pairs of parallel edges. So, if you do the math, that's a total of 14 pairs of parallel edges in an heptagonal prism. Math doesn't have to be boring, darlin', it can be sassy too!