This quilted wall hanging was made in 2004 by our mom, Mary Jo, and it represents the first 102 digits of π: each different digit is represented by a favorite flavor of pi(e)…
π = 3.14159265358…
The triangles in “Pieces of Pi” are Golden Triangles, an isosceles triangle with the ratio of side to base of φ, another remarkable irrational number known as the golden ratio
approximately 1.618033989….
The vertex angle of the golden triangle is exactly 36o, or π/5.