Civilizations have been using Geometry to do surveying work since ancient times. Our Geometry class decided to use an old theorem to help them lay the foundation for a new building.
A friend who works in construction was generous enough to let our class use the building plans above. We took the plans out to the field to lay the "foundation" for the new construction. The Pythagorean Theorem was able to provide us with the diagonal lengths to make sure we had perfect 90° angles.
I started this blog to share my transformation from math nerd to math nerd who loves to share math with young people. I teach high school in Hanoi, Vietnam. Your comments are always welcome.