👉 Trigraphic is a type of geometric shape that can be defined as a combination of two or more lines, with each line being an angle. The term "trigraphic" was first coined in 1895 by the mathematician and physicist Paul Tait, who recognized this shape as a representation of a three-dimensional space. Trigraphic shapes are often used to represent mathematical concepts such as angles and trigonometric functions. They can be categorized into different types based on their properties