5
A triangular based pyramid has no parallel lines but it does have 4 faces, 6 edges and 4 vertices.
a scalene pyramid.
It meed not have any.
None because a tetrahedron is a triangular based pyramid with 4 faces, 6 edges and 4 vertices
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.
A triangular pyramid has three lines of symmetry. Each of these lines connects a vertex of the base to the midpoint of the opposite edge on the base.
5
A triangular based pyramid has no parallel lines but it does have 4 faces, 6 edges and 4 vertices.
4
a square based pyrmaid has 24 lines of symitry
If you mean a square based pyramid then: there are 4 on the base, and 4 on the sides so there are 8 total.
7
12 lines of symmetry Hope this help u g-spots :P
It has 2 lines of sym
They are the one dimensional "lines" where the faces of the pyramid meet, in pairs.
7