Graphics library that render polygons without external frameworks
https://acolmenero.com/graphic-library/
Used tools during development and testing:
https://www.calculator.net/right-triangle-calculator.html
https://www.calculator.net/pythagorean-theorem-calculator.html
https://www.omnicalculator.com/math/law-of-sines
https://www.calculatorsoup.com/calculators/math/scientific-notation-converter.php