What are Ternary Graphs and how do we interpret them?

In this lesson, we will explore triangular graphs (or ternary diagrams), including how to read the axes and a couple of exam questions. 

• identifying the three elements depicted in a ternary graph and the line scale of each.

• stating the ‘mix’ of elements at any point on a ternary graph.

This type of two-dimensional graph can be made when the sum of the three variables always adds up to a constant - usually 100% or 1. The charts produced from this method of graphing are generally referred to as "ternary plots" or "ternary diagrams." They are frequently used to plot the compositions of mixtures in physical chemistry, petrology, mineralogy, metallurgy and other physical sciences. Ternary plots are also used in genetics and game theory.