21. The triangular cupola can form a tessellation of space with square pyramids and / or cuboctahedra can fill space. 22. The original cubic honeycomb walls are removed, joining pairs of square pyramids into elongated square bipyramids ( octahedron ). 23. It is a fairly extensive mountain, essentially a square pyramid with its summit at the centre of four ridges. 24. Imagine that a square pyramid is formed by lines joining four satellites with the receiver at the tip of the pyramid. 25. The elongated square pyramid can form a tessellation of space with tetrahedra, similar to a modified tetrahedral-octahedral honeycomb. 26. It can be seen as a cubic honeycomb with each cube subdivided by a center point into 6 elongated square pyramid cells. 27. A cubic pyramid of height zero can be seen as a cube divided into 6 square pyramids along with the center point. 28. Some types of NSOM operation utilize a campanile probe, which has a square pyramid shape with two facets coated with a metal. 29. It is therefore important in seeing how the structures in new lead oxyhalides ( containing square pyramids incorporated into sheets ) are arranged. 30. When unspecified, a pyramid is usually assumed to be a " regular " square pyramid , like the physical pyramid structures.
