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Shoelace scheme for determining the area of a polygon with point coordinates (,),..., (,). The shoelace formula, also known as Gauss's area formula and the surveyor's formula, [1] is a mathematical algorithm to determine the area of a simple polygon whose vertices are described by their Cartesian coordinates in the plane. [2]
The first mathematician to discover the existence of curves of constant width, and to observe that the Reuleaux triangle has constant width, may have been Leonhard Euler. [5] In a paper that he presented in 1771 and published in 1781 entitled De curvis triangularibus , Euler studied curvilinear triangles as well as the curves of constant width ...
This led to an opportunity for other clubs from Bali to merge and form a club using Persegi Gianyar's license to compete in the Liga Indonesia. Local clubs such as Perseden Denpasar , Persekaba Badung and Perst Tabanan merged with Persegi Gianyar to form a new club called Persegi Bali FC .