Name given to certain fundamental relationships between variable quantities and constants.


  • The formula to calculate the perimeter P of a square of side length c is : P = 4c.
  • The formula to calculate the volume V of a ball of radius r is : V = \(\dfrac{4πr^3}{3}\).
  • Euler’s formula is a formula that relates the number of vertices S, the number of faces F and the number of edges A of a convex polyhedron : S + F = A + 2.

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