Visually, the number three reminds me of a tripod, balanced by the three legs working together. We all know our own balance can be thrown off kilter with uneven sides in our metaphorical life triangles. Thankfully, a perfectly equilateral isn't required. Being isosceles or scalene doesn't take on an entirely new shape. Still a triangle; just a different angle.
Hyperbole aside, I had a lot of fun playing with my triangles and 2D kaleidoscope. Cutting and pasting is satisfying, arranging and rearranging before committing with a glue stick.