= 25 great circles of the spherical octahedron
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A spherical octahedron is a polyhedral shape that can be inscribed within a sphere. It consists of eight equilateral triangular faces, twelve edges, and six vertices. The concept of great circles arises from spherical geometry, where a great circle is the largest possible circle that can be drawn on a sphere. Great circles are the spherical equivalent of straight lines in plane geometry.
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