Add a new page:
This is an old revision of the document!
The Pythagorean theorem states a relationship between the three sides of a right-angled triangle where $a$ and $b$ represent the sides that form the right angle and $c$ is the longest side.
$p^2+q^2=r^2$ if and only if the triangle is a right triangle
The Pythagorean theorem enables us to draw accurate maps. This is achieved by covering the area that should be mapped with a virtual network of triangles. These triangles, via the Pythagorean theorem, allow us to measure distances and angles between stretches of land. This method is known as triangulation.
It is still used today, for example, to deduce the locations from given satellite data.