Real World Application/Activity Involving Circle Theorems and Triangles A good activity for students who have a working knowledge of GeoGebra. Your students will begin in one of three dig areas in Egypt, and then, using circle theorems and triangles, will find the distance to the other two sites. Next they will choose one of the three dig sites to start, where they will find an artefact that they will reconstruct in GeoGebra 3D which will be used for their report/submission to the contracting mu