## Chapter 9, Lesson 12

9-12.A name angles using three letters** In this diagram, V is the center of the circle.**

**a.**Name at least 4 different angles that have

*V*as vertex.

**b.**Name at least 4 different angles with vertex on the circle.

**9-12.B **recognize supplementary angles** In this diagram, O is the center of the circle.**

**Name at least 2 pairs of supplementary angles.**

**9-12.C** recognize attributes of a rectangle** Which statements are true about the diagonals of a rectangle? I **The diagonals are congruent.

**II**The diagonals bisect each other.

**III**The diagonals are perpendicular.

**(a)**I, II, and III

**(b)**I and II only

**(c)**I and III only

**(d)**I only