Another Angle in a Circle - Inscribed

Angles of a Circle - Inscribed Angles

1. What do you know about the measure of angle CAB? What is it's measure? Check your answer (click the box!). 2. Notice that angle CDB has a vertex that is on the circle, do you think it will have the same angle measure? What do you think is the measure of the angle? 3. Check your answer. Even if you were incorrect, what can you conclude about the relationship between angle CDB and its intercepted arc CB? IMPORTANT NOTE: CBD is called an INSCRIBED ANGLE. 4. What do you think is the measure of the major arc CDB, if the central angle is 70 degrees?