Library > Math > Geometry

Ptolemy's Ptools

1998
Ever wonder how high a cloud is? You can calculate altitude right from your own backyard and this site will tell you how. It will also show you how to have fun while completing math projects. Learn more about Claudius Ptolemy, a famous Greek mathematician. Check out quadrants and the properties of triangles. Do math projects which measure trees, buildings, cloud altitude, wind speed, and the altitude of a model rocket flight.