1. Geometry Section 8-3A Inscribed Angles Page 5841 1 1

2. Worksheet Answer Key D B E A C
201.06
.79
28.27
52.36
126.1
603.19
37.7
21.46
73.06 5 12
3.91

3. Vocabulary:
Inscribed Angle: An angle with its vertex on a circle and sides that contain chords of a circle.
Pg. 584

4. Inscribed Angle Theorem:
Inscribed Angles
We know that the measure of a central angle is equal to the measure of the arc it contains.
Pg. 576
Inscribed Angle Theorem:
The measure of an inscribed angle is half the measure of its intercepted arc. 4

5. Find the measure of each angle or arc indicated by a variable.
Try It:
Find the measure of each angle or arc indicated by a variable.
Pg. 585
48o

6. Find the measure of each angle or arc indicated by a variable.
Try It:
Find the measure of each angle or arc indicated by a variable.
Pg. 585
80o

7. Find the measure of each angle or arc indicated by a variable.
Try It:
Find the measure of each angle or arc indicated by a variable.
Pg. 585
90o

8. An inscribed angle that intercepts a semicircle is a right angle.
Theorems:
If two inscribed angles intercept the same arc, then they are congruent.
Pg. 585
An inscribed angle that intercepts a semicircle is a right angle. 8

9. Exercises:
Find the measure of each angle or arc.
136o #1
Pg. 586

10. Exercises:
Find the measure of each angle or arc.
46o #2
Pg. 586

11. Exercises:
Find the measure of each angle or arc.
90o #3
Pg. 586

12. Exercises: Find the measure of each angle or arc. a = 50o #4 Pg. 586
c = 80o
b = 40o

13. Exercises: Find the measure of each angle or arc. d = 80o #5 e = 140o
Pg. 586
e = 140o

14. Exercises:
Find the measure of each angle or arc.
x = 148o #6
Pg. 586

15. Exercises: ( Find the measure of each angle or arc. 98o 98o #8 - 12
mMN
98o
mÐNOM
#8 - 12
Pg. 586
49o
mÐMPN
64o
mÐMNP
67o
mÐNMP

16. Exercises: ( ( AB bisects ÐCAD, mBD = 95o, and mAD = 74o. 95o 84.5o
mÐCAD
84.5o
mÐBCA #
Pg. 586
47.5o
mÐCAB
85o
mÐCBD

17. Homework: Practice 8-3A