Question

Identify the number of faces, edges and vertices in a pyramid whose base is a 13 sided regular polygon. Verify the Euler's theorem for this pyramid.

Please fast........​

Answer 1

Step-by-step explanation:

Question. 1 Which amongst the following is not a polyhedron?



Solution.

(c) According to the definition of a polyhedron, option (c) figure does not satisfies the condition of a polyhedron.

Since, a solid is a polyhedron if it is made up of only polygonal-faces, the faces meet at edges with one line segment and the edges meeting at a point. The point is generally called as vertex. But all the faces of option (c) are not polygons, there is a

circular base, so the figure is not a polyhedron.

Question. 2 Which of the following will not form a polyhedron?

(a) 3 triangles (b) 2 triangles and 3 parallelograms

(c) 8 triangles (d) 1 pentagon and 5 triangles

Solution.

(a) A polyhedron is bounded by more than four polygonal faces. But in case of 3 triangles, it is not possible. So, option (a) does not form a polyhedron.

Answer 2

Answer:

I think it's pentagonal pyramid.

Hope this helps.

Mark as a brainliest.