LESSON 10–3 Arcs and Chords.

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Presentation transcript:

LESSON 10–3 Arcs and Chords

Concept

A. 42.5 B. 85 C. 127.5 D. 170 Example 1

Use Congruent Chords to Find Arc Measure Jewelry A circular piece of jade is hung from a chain by two wires around the stone. JM  KL and = 90. Find . Example 1

Use Congruent Arcs to Find Chord Lengths Example 2

A. 6 B. 8 C. 9 D. 13 Example 2

Concept

Use a Radius Perpendicular to a Chord Answer: Example 3

A. 14 B. 80 C. 160 D. 180 Example 3

In the circle below, diameter QS is 14 inches long and chord RT is 10 inches long. Find VU. Example 4

Use a Diameter Perpendicular to a Chord CERAMIC TILE In the ceramic stepping stone below, diameter AB is 18 inches long and chord EF is 8 inches long. Find CD. Example 4

Concept

Chords Equidistant from Center Since chords EF and GH are congruent, they are equidistant from P. So, PQ = PR. Example 5

A. 7 B. 10 C. 13 D. 15 Example 5