https://docs.google.com/document/d/1GcVRAnpDDqss-92n_gQ6eausSMBqRkW6wUI_MQZAWb8/edit?usp=sharing
Geometry: Equations of Circles, and substitution
https://docs.google.com/document/d/1WAlj_xhwDmh8zgn1uwroqJfv3dGzBQSBJWXQBLv1xvA/edit?usp=sharing
https://docs.google.com/document/d/14Kp1yAjBzlWxNNp1I7xX7EWCHdE2VyrxXHcz6xH8LaM/edit?usp=sharing
Geometry Lab: Inscribed and Circumscribed Circles, Transformation on Circles
https://docs.google.com/document/d/1bjFE5zapt9N77DrRy7dnPehAz8TXrtSE4w6vbfTAaEo/edit?usp=sharing