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# 10 3 Skills Practice Arcs And Chords

**10 3 Skills Practice Arcs And Chords**. Get your 103 homework here ------------------. All central angles of a regular polygon are congruent and add to 360.

Therefore m arc LK m arc KM. By substitution m arc LK 84 or 42. So by Theorem 103 bisects arc LKM.

### Why is RS UT.

The perpendicular bisector of a chord is a diameter or radius. Theorem 10-3 In a circle if a diameter or radius is perpendicular to a chord then it bisects the chord and its arc. In U VW 20 and YZ 5x. Diameter JK 18 and the radius of a circle is.