Where can i get math formulas when it comes to geometry?

Question

I am trying to program shapes, and its a hassle when im stuck trying to find formulas in shapes and geometry stuff. Do u guys have any sources(such as websites or yt channels) on where i can easily compute, find formulas or learn in geometry or trigonometry?

Answer 1

https://is.gd/98jgxl

Answer 2

https://www.cuemath.com/geometry-formulas/