====== Gauss Legendre: ======

**Efficient usage:** 1D (line) elements, 2D quadrilateral elements, 3D hexahedral elements;

Required number of points (//Ngp//) for a polynomial of degree //d//:

1D:

//Ngp=// (//d+//1)/2

2D:

//Ngp(2D)=(Ngp(1D))<sup>2</sup>  //

3D:

//Ngp(3D)=(Ngp(1D))<sup>3</sup>  //