Triangle plots used to confuse me, until I was told to see them as a cut through the corner of a 3D cube, with the three axes spanning the variables varied: P + S + W = constant!
T. M.M. Bastiaansen, R. T. Benders, J. A. Dijksman, M. Thomas, W. H. Hendriks, S. de Vries, G. Bosch — Animal Feed Science and Technology 295 (2023)
MultiPhase Matters 