Module geometry 

Structs

CircleAreaFunction

Area of a circle: A = π * r^2

CircleCircumferenceFunction

Circumference of a circle: C = 2 * π * r

Distance2DFunction

Distance between two points in 2D space

PythagorasFunction

Pythagorean theorem: c = sqrt(a^2 + b^2)

SphereSurfaceAreaFunction

Surface area of a sphere: A = 4 * π * r^2

SphereVolumeFunction

Volume of a sphere: V = (4/3) * π * r^3

TriangleAreaFunction

Area of a triangle using Heron’s formula