The Pythagorean Theorem—discovered by the Greek mathematician Pythagoras in the 6th century BCE—is a cornerstone of mathematics. Simply stated as a 2 + b 2 = c 2, the theorem posits that the sum of ...

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.

STEP 1 - RIGHT TRIANGLE x 4: Take one piece of card and fold it in half, then fold it in half again... Image caption, ... use the ruler and pencil to draw a straight line across the bottom corner of ...

You might think that once a theorem has been proved that would be the end of it. I mean, is there possibly any value in having another proof of something? A new proof certainly doesn't make a theorem ...

Catherine Scarlett responds to an article about US teenagers who claim to have proved the theorem using trigonometry While it is heartening to see enthusiastic mathematical inquiry in young people and ...