This activitie uses the power of Cabri Jr. to explore the relationship between inscribed angles and central anlges in cirles.
Before the Activity
Print out and copy the word document. Student will draw a circle, construction central and inscribed angles. The students will measure the angles and drag the angles around the circle and obsevre the result. This should lead to the conjecture that inscribed angles measure 1/2 fo the cental angle.
During the Activity
More inscribed angles can be add to the circle and explored. Many problems in geometry text books have multiple inscribed angles. Adding more angles can make the construction look more like homework problems
After the Activity
Review student answers:
As a class, discuss questions that appeared to be more challenging
Re-teach concepts as necessary