A triangular pyramid * * * * * A triangular pyramid has no parallel faces. None. The correct answer is a parallelepiped (special cases: cuboid, cube).
3 pairs
A hexagon.
A hexagon.
A hexahedron, or cube.
A cube or a cuboid
I think a triangular pyramid.
3 pairs of parallel lines (2 dimensional) : regular hexagon.3 pairs of parallel faces (3 dimensional) : cube or rectangular prism (also known as cuboid)
3 pairs of parallel lines (2 dimensional) : regular hexagon.3 pairs of parallel faces (3 dimensional) : cube or rectangular prism (also known as cuboid)
A triangular pyramid * * * * * A triangular pyramid has no parallel faces. None. The correct answer is a parallelepiped (special cases: cuboid, cube).
A rectangular prism has six faces, and each pair of opposite faces is parallel to each other. Therefore, a rectangular prism has three pairs of parallel faces.
A cuboid has 3 pairs of parallel faces.
An octahedron is a closed 3-d shape with 8 polygonal faces. There are 257 topologically different convex octahedra. In most cases there will be no parallel faces but there can be four pairs of parallel faces.
3 pairs
3 pairs
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.
a cube * * * * * It cannot be a cube because a cube does not have 8 pairs of perpendicular faces - it has 12.