The Ubiquity of the Pythagorean Theorem

The Pythagorean theorem states that in a right triangle, the square of the longest side equals

the sum of squares of the other two sides. Sounds abstract, but you use this

constantly without realizing it. Construction workers use it to check if walls are perfectly

square. GPS systems calculate your distance from satellites using this exact formula.

Even your phone's screen size is measured diagonally using Pythagoras. When you're wondering

if that couch will fit through your doorway at an angle, you're basically solving a Pythagorean

problem. This 2,500 year old formula is literally everywhere in modern life.