What are the major theorems that allow you to determine the relationships between angles formed by lines that intersect a circle?

What are the major theorems that allow you to determine the relationships between angles formed by lines that intersect a circle?

You can determine the measure of an inscribed angle by multiplying the measure of its intercepted arc by ______. You can use the ______ (Secant-Tangent Produce OR Intersecting Chords) Theorem to find missing angle measures.