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A square based pyramid has 5 corners (or vertices) - one for each of the corners of the square base and one at the top (or apex).It has 8 edges. Four around the base, then four more, one from each corner, meeting together at the top.It also has 5 faces; the square base and four triangular ones - one from each side of the base to the top.A square based pyramid has 8 edges, 5 faces and 5 vertices
A shape with more than 12 edges is a dodecahedron which has 30 edges
The round diamond shape is the most popular shape and accounts for about 75% of all diamonds that are sold. The reason being that, due to the way it is cut, it maximizes brightness. The princess cut diamond has a square or rectangular shape and it’s the second most popular diamond shape after the round diamond. The reason why the princess cut is cheaper and more affordable than a round cut is due to the fact that the yield from the rough stone is 80-90%, whereas the round diamond yield is about 40%. The larger the yield is the more affordable the diamond is.
I don't know but I need to know =p
A pyramid is a generic term used to describe a polyhedron with a polygonal base and a number of triangles rising from that base to meet at an apex. A pyramid whose base is a polygon with n-sides (or vertices) has n+1 faces, n+1 vertices and 2n edges, where n >= 3.