Triangle Solver App

[Han]

A degenerate triangle is a triangle. A non-triangle is one where the sum of any two sides is less than the remaining side. As for the picture, the picture is simply to provide users with the knowledge that angle C is opposite of leg c (similarly for A, a, B, and b). It is not meant to be drawn to scale as it represents a generic case (and a degenerate triangle is, by definition, non-generic). This eliminates having to use the labels that you describe, because it should be very clear from the diagram. It's even color-coded!