1. Lesson 8-4: Arcs and Chords

2. Lesson 8-4: Arcs and Chords
Theorem #1:
In a circle, if two chords are congruent then their corresponding minor arcs are congruent. E A B C D
Example:
Lesson 8-4: Arcs and Chords

3. Lesson 8-4: Arcs and Chords
Theorem #2:
In a circle, if a diameter (or radius) is perpendicular to a chord, then it bisects the chord and its arc. E D A C B
Example:
If AB = 5 cm, find AE.
Lesson 8-4: Arcs and Chords

4. Lesson 8-4: Arcs and Chords
Theorem #3:
In a circle, two chords are congruent if and only if they are equidistant from the center. O A B C D F E
Example:
If AB = 5 cm, find CD.
Since AB = CD, CD = 5 cm.
Lesson 8-4: Arcs and Chords

5. Lesson 8-4: Arcs and Chords

6. Lesson 8-4: Arcs and Chords

7. Lesson 8-4: Arcs and Chords

8. Lesson 8-4: Arcs and Chords
Homework
Pg. 611 # 6-20
Lesson 8-4: Arcs and Chords