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A Pentagonal Pyramid would have 10 edges.
5 edges along the bottom/the base of the pyramid and then 5 edges extending to the tip of the pyramid from the base.
Hope that helps.
Jamz159
Sphere, cylinder and a cone
no, it is sphere is not a perfect circle. because sphere is 3dimensional figure and circle is 2 dimensional figure
A cube has 6 faces. The number of faces, alone, is not sufficient to figure out the number of edges. For example, a cube has 12 edges. A pentagonal pyramid also has 6 faces, but it has 10 edges.
There can be no such shape.
There is no 3 dimensional figure with JUST 3 edges.