1. Rigor and Relevance
Find the measures of angles formed by lines that intersect circles.
Use angle measures to solve problems relating to satellites and optometry.

3. Example 1: Using Tangent-Secant and
Tangent-Chord Angles
Find mEFH and

4. Example 2: Finding Angle Measures Inside
a Circle
Find mAEB.

5. Example 3: Finding Measures Using
Tangents and Secants
Find the value of x in each diagram. A.

6. Example 4: Optometry
Two of the six muscles that control eye movement are attached to the eyeball and intersect behind the eye. If mAEB = 225, what is mACB?

7. Example 5: Ferris Wheel
An observer watches people riding a Ferris wheel that has 12 equally spaced cars.
Find the value of the angle of elevation, x.

8. Turn in your workbook to page 520 for 1 more theorem and proof.
Complete Practice #2

9. 12-5 Classwork (not graded)
Workbook pg 520 #1, 3, 5; pg 521 #7
Textbook pg835#16, 17, 20, 21, 23, 24

10. 12-4/12-5 Honors Assignment
Primary assignment: join.quizizz.com
Codes:
Period 1– (due Mon 4/23)
Period 5 – (due Mon 4/23)
Period 6 – (due Tues 4/24)
Secondary Assignment:
Workbook pg 518 ALL
Workbook pg 522 ALL

11. 12-4/12-5 Assignment
Primary assignment: join.quizizz.com
Codes:
Period 2– (due Tues 4/24)
Period 4 – (due Tues 4/24)
Period 7 – (due Fri 4/20)
Secondary Assignment:
Workbook pg 518 ALL
Workbook pg 522 ALL