2/22/12

1. In the following figure,

*O* is the center of the circle. *OA* is congruent to *CB*. What is the degree measure of the angle at *A*?

2. In the figure below,

*O* is the center of the circle. The distance from *A* to *D* is the same as the distance from *O* to *B*. If the angle at *A* has 20^{o}, how many degrees are in __/__*COB*?

3. In the figure below, *OE*__ | __*ON*, and *AP*||*ON*. If* /AOE is 30^{o}, what is /NAP?*

4. In the figure below /*AOB* is 74^{o}. What is __/__*BAC*?