Angles of Chords, Secants, and Tangents
Once you feel comfortable with the definition of chords and their theorems, read this article which details several ways we can calculate the angles formed by chords. Since this page has so much information, read slowly and take time to work through each example. It may be helpful to write down the many theorems to make sure you understand them.
Then, complete review questions 1–10 and check your answers.
Click https://www.ck12.org/section/angles-of-chords-secants-and-tangents/ link to open resource.