Pythagorean Theorem

Relates the sides of a right triangle: the square of the hypotenuse.

a^2 + b^2 = c^2
\\[10px]
\begin{aligned}
  c &= \sqrt{a^2 + b^2}
  \\[10px]
  &= \sqrt{3^2 + 4^2}
  \\[10px]
  &= \sqrt{25}
  \\[10px]
  &= \boxed{5}
\end{aligned}

a^2 + b^2 = c^2\\[10px] \begin{aligned} c &= \sqrt{a^2 + b^2}\\[10px] &= \sqrt{3^2 + 4^2}\\[10px] &= \sqrt{25}\\[10px] &= \boxed{5} \end{aligned}