Learn about the Pythagorean theorem. The Pythagoras theorem is a fundamental relation among the three sides of a right triangle. It is used to determine the missing length of a right triangle. The ...

Add Yahoo as a preferred source to see more of our stories on Google. A high school teacher didn't expect a solution when she set a 2,000-year-old Pythagorean Theorem problem in front of her students.

The most important theorem we learnt in childhood carries the name of a Greek philosopher, but not necessarily the legacy. Evidence increasingly shows that the theorem existed long before his lifetime ...