Module 02 · Geometry
The Pythagorean
theorem
How long is the diagonal across a rectangle? With a right-angled triangle, you can find it from just two measurements.
a and b are the sides that meet at the right angle. c is the hypotenuse: the longest side, opposite the right angle.
A shortcut across a courtyard
A rectangular courtyard is 6 m wide and 8 m long. How far would you walk diagonally from one corner to the opposite corner?
Start by identifying the two sides that meet at 90°.