In this lesson Rob travels to Egypt where he will teach you how to calculate the actual height of the great Pyramid of Giza. Rob also uses real 3D models to help you visualise the 2D triangles inside the pyramid that you will need in order to solve these 3D problems.

You must be able to calculate lengths using Pythagoras before trying this lesson. If not then watch the following lessons: Pythagoras theorem finding the longest side and/or Pythagoras theorem finding the shorter side.

The question that is covered in this lesson is, Calculate the height of the great pyramid of Egypt. ABCD is a square. AE=BE=CE=DE=186m