Pre-Calculus - Finding the missing sides of a 45 45 90 triangle using special relationships

The video tutorial explains the constancy of relationships in geometry, focusing on how side lengths relate to each other. It uses an example involving square roots to demonstrate how to calculate the hypotenuse by multiplying the side length by the square root of 2. The tutorial concludes by inviting questions from the audience.

What new insight or understanding did you gain from this video?