Two American high school girls have shaken up 2,000 years of mathematics by presenting five ingenious new proofs of the Pythagorean theorem.
Trigonometry has puzzled countless students over the years, but few problems are as mind-bending as the age-old right triangle mystery. The equation a² + b² = c² may seem simple on the board, yet understanding why it always holds true often feels like grasping at shadows.
