This slideshow contains animated slides of all the theorems we do in Circle geometry with their proofs. Each theorem is set out clearly with all the necessary reasons, notation, and a sketch. I have created a shorter version that includes all theorems but only the proofs that are required by the South African curriculum. I use this very successfully in a flipped classroom, where learners copy the proofs at home and we work on problems in class.
If you buy this product you have my permission to give the electronic version to your learners if you think it might be useful.
Theorems on these topics:
--> Centre of circle to a chord
--> Subtended angles
--> Cyclic quadrilaterals