None of the edges of a triangular pyramid is parallel to any of its other edges.
The base of a square pyramid is a square and its edges are parallel. The sides are not parallel since they intersect at the apex.
There are 9 edges. It has three edges which are parallel to each other (along the length of the prism) AND it has three pairs of parallel edges - at the top and bottom of the prism.
A hexagonal prism also has 6 faces and 10 edges. It is a prism that has a hexagonal base and two parallel congruent hexagonal faces.
Not all edges are parallel to each other, only the opposite edges are parallel to each other
A tetrahedron is a triangular based pyramid that has no parallel edges whereas most prisms have parallel edges such as a cuboid or a cylinder.
A pyramid with 18 edges would be called a nonagonal pyramid. A prism with 18 edges is called a hexagonal prism.
actually all edges of a rectangular prism are parallel to another edge
None of the edges of a triangular pyramid is parallel to any of its other edges.
The base of a square pyramid is a square and its edges are parallel. The sides are not parallel since they intersect at the apex.
There are 9 edges. It has three edges which are parallel to each other (along the length of the prism) AND it has three pairs of parallel edges - at the top and bottom of the prism.
Not true. The base has parallel edges.
A hexagonal prism also has 6 faces and 10 edges. It is a prism that has a hexagonal base and two parallel congruent hexagonal faces.
Not all edges are parallel to each other, only the opposite edges are parallel to each other
Pyramid: Five faces, eight edges, and five vertices. Prism: Six faces, twelve edges, and eight vertices.
It has 3 parallel edges and one set of parallel ends!
Each of the nine edges have another edge running parallel to them.