Geometry shows up everywhere in coding problems. Grid navigation, collision detection, shape validation, map distances. If you cannot calculate area or check if three points form a triangle, many problems become impossible.
In this section, I will show you the coordinate plane, distance formulas, the Pythagorean theorem, and basic area and perimeter calculations. You will work through problems that need these formulas.
By the end, you will recognize when a problem needs geometry and apply the right formula without hesitation.