ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Pythagorean theorem, equation. This theorem, named for 6th-century BC Ancient Greek mathematician Pythagoras, states that in a right-angled triangle, the sum of the square of the hypotenuse ('c' squared,the side opposite the right angle) is equal to the sum of the squares of the other two sides ('a' squared and 'b' squared). Pythagorean theorem is applied in many everyday uses to calculate distance. For example in engineering, architecture, surveying, forensic analysis of bullet trajectories, sourcing the epicentre of earthquakes and so on.
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