2
It must have at least one.
5
A triangular prism has 9 edges!
A triangular prism has five faces.
A triangular prism has 3 rotational symmetries. This includes rotations of 120 degrees and 240 degrees around the axis that runs through the centers of the triangular bases, as well as a 360-degree rotation that returns the prism to its original position. Additionally, the prism can be rotated around the axis perpendicular to the triangular bases, but this does not add to the count of unique rotational symmetries.
there are two plane symmetry on triangular prism.
It must have at least one.
This depends on the type of prism. If the shapes on the ends are pentagons, the prism has 6 planes of symmetry. If they are hexagons, it has 13 planes of symmetry. It has the same number of planes of symmetry as the shapes on the end have lines of symmetry, plus 1.
Five
3
Three.
5
A triangular based pyramid has no lines of symmetry. However, if each of the non-base triangular sides are equal it will have 3 planes of symmetry. If the base triangle is also equal, it will have 6 planes of symmetry.
Three.
3D shapes don't have lines of symmetry they have plane's of symmetry.
The answer is 13- for more detail:
five