Find the measure of C for the circle :

x = 72

Step-by-step explanation:

∠DBC is an included angle and arc DB is its corresponding arc

Relationship between an included angle and its corresponding arc:  an included angle is equal to one half of its corresponding arc

so

∠DBC = arc DB

we are given that arc DB = 144

so we exchange arc db with 144

∠DBC =

so we can conclude that ∠DBC (x) = 72

c. prove the lengths are the same.

step-by-step explanation:

you need to prove the segments are congruent. congruent segments have the same length. find the lengths of the segments using the distance formula, and compare them.

answer: c. prove the lengths are the same.

c. (3,2,6) is the answer.