12
Yes, there are two pairs of parallel sides.
A cylinder is different because it is has no edges and a rectangular prism does. A cylinder has two faces and a rectangular prism has 6. A cylinder doesn't have any verticies and a rectangular prism has 8.
A pentagonal prism has two end faces of pentagons plus 5 rectangular faces between them; thus it has: 7 faces, 10 vertices and 15 edges.
I don't think there's a three dimensional rectangle, and if the two dimensional triangle exists in three dimensional space, it would have strange properties because it only has 4 edges. There however, a three dimensional rectangular prism. It has 12 edges.
12
A rectangular triangle is an oxymoron! A triangle cannot be rectangular and no rectangular shape can be a triangle. The two words contradict each other.
There are eight (8). Vertices are the corners where two edges meet.
A rectangular prism has six faces because it has 4 sides and two bases. It also has eight vertices and 12 edges.
the vertice's in a rectangular prism are located wherever two edges meet.
Considering that any two edges that meet at 90 degrees are perpendicular, there are 3 per corner, giving a total of 24.
A triangular prism has five faces and nine edges. Two of the faces are triangular bases and the other three faces are rectangular.
maybe it has 8 edges............ . Edges - as in corners? I make it nine. Edges as in faces? I make it five. A triangular prism has 5 edges * * * * * Edges are not corners! They are the "lines" where two faces meet. There are 9 edges in a triangular prism.
Rectangular prism Cube
Yes, there are two pairs of parallel sides.
A cylinder is different because it is has no edges and a rectangular prism does. A cylinder has two faces and a rectangular prism has 6. A cylinder doesn't have any verticies and a rectangular prism has 8.
A hexagonal prism has eighteen edges. Hexagonal prisms also have twelve vertices and eight faces, including two hexagonal bases and six rectangular faces.