S, triangle center X(31) is the 2nd power point. A power point is a point whose coordinates are defined by a power function. For the 2nd power point the
trilinear coordinates are a² : b² : c².
The isogonal conjugate of S, triangle center X(31) can be constructed as follows:
- Reflect the lines AS, BS, CS about the bisectors of the triangle ABC (=blue lines)
- These blue lines cross at the triangle center X(75).
The barycentric coordinates of this point depend on the lenghts of the sides of the triangle.