A triangular prism has 9 parallel lines
2
Three.
It must have at least one.
Each of the nine edges have another edge running parallel to them.
A triangular prism has 9 parallel lines
there are two plane symmetry on triangular prism.
2
Three.
2
two... simple as that...It has none.It has two parallel faces.A triangular prism has 4 parallel faces.Two. The two ends are parallel
It must have at least one.
Each of the nine edges have another edge running parallel to them.
Each of the nine edges have another edge running parallel to them.
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.
In a general triangilar prism, none.In a right triangular prism, three pairs and one triplet.In a general triangular prism, none. In a right triangular prism, three pairs and one triplet.
A triangular prism has 5 faces, including one parallel pair; any of the faces might be considered a "base" depending on its orientation.