1. Arcs and Chords
Section 10-3

4. Example: Applying Congruent Angles, Arcs, and Chords
TV  WS. Find mWS.
= 88°

5. Example: Applying Congruent Angles, Arcs, and Chords
C  J, and mGCD  mNJM. Find NM.

6. Example:
PT bisects RPS. Find RT.
RT = 12

7. Example:
Find each measure.
A  B, and CD  EF. Find mCD.
mCD = 100

8. In a circle or congruent circles, two chords are congruent if and only if they are equidistant from the center of the circle

9. Example: Find NP. NP = 2(15) = 30
Hint - Use the Pythagorean Theorem to find NS first
NP = 2(15) = 30

10. Example:
Find QR to the nearest tenth.
QR = 2(17.3) = 34.6

11. Arcs, Chords, and Polygons
The chords of adjacent arcs can form a polygon. The polygon is inscribed in the circle and the circle circumscribes the polygon

12. Lesson Quiz: Part II
Find each measure.
2. NGH
139
3. HL 21

13. Lesson Quiz: Part III
4. T  U, and AC = Find PL to the nearest tenth.
 12.9