"Triangular" is an adjective and so cannot have any of anything. You need a noun to go with the adjective to make it a subject of the question: such as triangular lamina, or triangular pyramid or triangular prism, or triangular dipyramid or whatever. And in each case, the answer will be different!
how many faces vertices's and edges does a triangular pyramid
A triangular prism has 9 edges, 5 faces and 6 vertices.
A triangular prism has 9 edges, 5 faces and 6 vertices.
A triangular prism has 5 faces, 9 edges and 6 vertices
A triangular prism has 9 edges, 5 faces and 6 vertices
A triangular prism has 6 vertices and 9 edges.
A triangular prism has 5 faces, 9 edges and 6 vertices
A triangular base pyramid has 4 faces, 6 edges and 4 vertices
Faces: 5 Edges: 9 Vertices: 6
5 faces 6 vertices 9 edges
Faces: 5 Vertices: 6 * * * * * Edges: 9
A tetrahedron is a triangular pyramid. It has six edges, four faces and four vertices.