False. In fact, the opposite is true: all pyramids have an even number of edges.
Yes.
A cube has 12 edges. A 4-sided pyramid has 8 edges. A 3-sided pyramid has 6 edges. There are also other pyramids with more sides.
Both cones and pyramids have one base and they all have a vertex, or they all come to a point. That is what makes them alike. What make them different is that a cone has one curved edge at its base, and a pyramid has 6 to 8 edges which is not curved
Pyramids are not normally spherical shaped but a triangular based pyramid which is a tetrahedron has 4 faces, 6 edges and 4 vertices.
Faces = 4 Edges = 6 Vertices = 4 The shape is also known as a tetrahedron.
8
That solid is called a hexahedron. Many shapes meet the definition, including cubes, parallelepipeds, rhombohedrons, pentagonal pyramids, and truncated square pyramids.
A triangular dipyramid - two triangular pyramids stuck together.
Pentagonal pyramids have six faces, ten edges, and six vertices. One of the faces is a pentagonal base, the rest are triangular.
There are no pyramids with an odd number of edges. A pyramid is defined as a polygon for the base, with triangular shaped faces rising from the base's edges to a common point above the plane. As a result, the number of rising edges is always equal to the number of base edges, meaning that the total number of edges is always even.
The hexagon at one end has 6 edges. The hexagon at the other end also has 6 edges. And then, there are 6 edges joining the two hexagons together. So, in all, there are 6+6+6 = 18 edges. A prism with bases that are n-gons has 3*n edges.
5 faces 8 edges 5 vertices
7 faces 12 edges 7 vertices
Rectangular pyramids
If you are asking about pyramids such as in Egypt, they have thousands of edges because they are constructed of thousands of huge blocks of stone. The surface is not smooth at all.
If you mean 6 faces and 12 edges then a cube would fit the given description which also has 8 vertices.