1. 15.5 Angle Relationships in Circles
What are the relationships between angles formed by lines that intersect a circle?

2. Angle = ½ (the angle’s arc + the vertical angle’s arc)

3. Find the unknown measure.2. 1.

4. Angle = ½ (Big Arc – Little Arc)
Tangent & Secant Line Tangent Lines Secant Lines
Angle = ½ (Big Arc – Little Arc)

5. Find the value of x for each.2. 1. 3.

6. Tear out page 823 and circle the following problems:
5 & 6
Tear out pages and circle the following problems:
3-6, 11-13

7. p. 823
y=6, DE=7, FG=8
X=4.2, JL=14.2, MN=13
p. 836
64.5
107.5
135 94
57.5 40 18