four
a triangle- based pyramid has 4 faces
A triangle based pyramid has 6, a square based pyramid has 8.
four
four
Four
4
A TRIANGLE based PYRAMID is called a tetrahedron.
No. A 3D triangle would be a triangular based pyramid.
four sides and a base
A triangular-based pyramid has six edges: three in the base triangle and three from there to the apex.
A tetrahedron, a triangle based pyramid, an octahedron, an icosahedron plus many more.
a triangular based pyramid