Since , this meansthat the correspondingcentralanglesare also congruent:
.Therefore, by the postulate.
We concludethat.
Hereare someexamplesin whichwe applythe conceptsand theoremswe discussedin this section.
Example 1
Find the measureof eacharc.
A. B. C.
A.
B.
C.
Example 2
Find
in circle
. The measuresof all threearcs mustadd to