For each diagram below, write an equation to represent the relationship between
What is the relationship between angles created by parallel lines?
What is the relationship between central and inscribed angles?
Look at the triangles formed by the chords. How are they similar? How can this help you?
Look at the inscribed angles. What is their relationship to the arc? How can this help you?
Recall that the measure for inscribed angles is half the arc it intercepts.