Students will be sent via TI-Navigator™ or linked calculators an APPVAR entitled "EXTTRI." They will then explore the relationship between an exterior angle and the remote interior angles of a triangle using Cabri™ Jr. to drag various parts of a triangle. The corresponding worksheet can be tailored to fit a variety of class formats.
Before the Activity
The student should know how to select, grab, and drag an object using the Cabri Jr. App.