Arc Addition Postulate
by Sofia Arcoy
Observe Circle A, and Arcs BC and CD.
The Arc Addition Postulate states that the measure of the arc formed by two adjacent arcs is the sum of the measures of the two arcs. In this case, Arc BC (measuring 55.04 degrees) and Arc CD (measuring 61.28 degrees) create Arc BD, which measures the sum of their angles, (116.32 degrees).