Triangular coordinates

The term triangular coordinates may refer to any of at least three related systems of coordinates in the Euclidean plane:


 * a special case of barycentric coordinates for a triangle, in which case it is known as a ternary plot or areal coordinates, among other names
 * Trilinear coordinates, in which the coordinates of a point in a triangle are its relative distances from the three sides
 * Synergetics coordinates