Do you need an Introduction to Geometry resource that starts off the year with a fun, collaborative activity? Do you want an activity that encourages students to discover for themselves why points and lines are undefined? Why the segment addition postulate and angle addition postulate work and work all the time? The connection between perpendicular bisectors, right angles, and midpoints?This activity utilizes GeoGebra and simple constructions to demonstrate and prove all of the above topics in a