SVG Draft

Circle

http://improve-future.com/math-calculate-circle-space.html

y 1 π/n x xπ/n y x 1 π/n x/y x y 1

Ball

http://improve-future.com/calculate-sphere-volume.html

1/n 1 √(1 - (1/n)×(1/n))

Triangle

A B C b c a