Sorry Tau, but I can't forgive you for being half visually, but double numerically..

Btw missing Pau: https://xkcd.com/1292/

The only nice thing about pi is the approximation 22/7… and even there eta has it licked with 11/7

As someone with a background in theoretical physics, my preferred circle constant is the dimensionless number one.

these circle constants only make sense when using radians. instead, if you use the more natural angle unit, "the turn", then a rotation is 1 turn, right angle is 1/4 turn, angle of equilateral triangle is 1/6 turn etc

(radian is a more natural unit for calculus, I'll grant)

@Sinclair what about calculating areas volumes or circumferences?