Substitute the known lengths into Pythagoras’ theorem 17 2 = x 2 + 8 2 Calculate the value of the square of the missing side x 2 = 17 2 + 8 2 = 225 Find the square root of this value to get the length ...

With all due respect to Pythagoras, newly uncovered evidence suggests that his famous theorem, used to calculate the lengths of each side of a right triangle, might be 1,000 years older than him. That ...