In order to solve this problem, you need to find the arc ABC:
1) To find the arc ABC, you need to add the measures of the arcs AB and BC, since the arc ABC is equal to their sum, that is, you need to add 152 and 80.
2) Hence, the measure of the arc ABC is equal to: 152 + 80 = 232 °.
Therefore, our answer: the measure of the arc ABC is 232 °.
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