Fat Cats Go Down Alleys Eating Bacon is the order of the sharps, and also is the key to your circle of 5ths. I would write that out (F♯CGDAEB) of on a piece of paper. The key of C has zero sharps, so put a 0 above C. The next scale that has only 1 sharp is G, so put a one above G. D has 2, A has 3, E has 4, etc. So using FCGDAEB you can know both the order of the sharps as well as the circle of 5ths for the sharps.
You can trace something circular
Hyperbolic plane geometry is also the geometry of saddle surfaces and pseudospherical surfaces, surfaces with a constant negative Gaussian curvature. A modern use of hyperbolic geometry is in the theory of special relativity, particularly Minkowski spacetime and gyrovector space.
