## Chapter 10, Lesson 9

**10-9.A** distinguish between clockwise and counterclockwise

**Which triangle ABC has its vertices shown in counterclockwise order?**

**(a)** I and II only **(b)** I and III only **(c)** II and III only **(d)** I, II, and III

**10-9.B** understand degree measure in a circle

**The diagram shows three circles of different radii. In each circle, a central angle intercepts an arc that is** **of the circumference.**

**Which statement about these central angles is true?I** The angle in the circle with the greatest radius has the greatest measure.

**II**The angle in the circle with the least radius has the least measure.

**III**All three central angles have the same measure.

**(a)**I and II only

**(b)**I only

**(c)**II only

**(d)**III only