It can, but it need not have parallel lines.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. Some of these have no parallel sides whereas a right hexagonal prism has 3 quartet of parallel sides and one sextet.
Infinite
There are 257 topologically different convex octahedra. Many of these will have no parallel faces. It can have four pairs of parallel faces.
how many sets of parallel lines are in a triangle
It can, but it need not have parallel lines.
An octahedron has 7 perpendicular lines.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. Some of these have no parallel sides whereas a right hexagonal prism has 3 quartet of parallel sides and one sextet.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. Some of these have no parallel sides whereas a right hexagonal prism has 3 quartet of parallel sides and one sextet.
14
Infinite
Not necessarily. A heptagon-based pyramid is an octahedron and it has no parallel faces.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. The number of parallel edges or faces will depend on the particular octahedron. A heptagon-based pyramid, for example, has no parallel edges nor parallel faces.
There are 257 topologically different convex octahedra. Many of these will have no parallel faces. It can have four pairs of parallel faces.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. Some of these have no parallel edges whereas a right hexagonal prism has 4 pairs of parallel faces.
its has parallel faces and edges
A triangle can have no parallel lines.