plane chart การใช้

Despite the difference in terminology, notably the use of latitude degrees, the rule of marteloio and the Regiment of the Leagues are very similar they are both about solving triangles on a plane chart.
This is closely analogous to the well known " upper half plane chart " for the hyperbolic plane "'H "'2, which is familiar to generations of complex analysis students in connection with " conformal mapping problems " ( and much more ), and many mathematically minded readers already know that the geodesics of "'H "'2 in the upper half plane model are simply semicircles ( orthogonal to the circle at infinity represented by the real axis ).