In this lecture we were introduced to the Pythagorean Theorem, which allows us to find the missing side of a triangle when we know the other two.
We specifically looked at the 3-4-5 right scalene triangle and the 1-1-root(2) right isosceles triangle and proved the a^2 + b^2 = c^2 geometrically.
When was the last time you used this formula to solve a problem in your game?