Geometry

Question Analysis:

This question involves calculating the measure of an angle () using the measures of related angles ( and ). The main focus is applying the relationship between adjacent angles.

Key Concept Explanation:

If two adjacent angles share a common side and vertex, the measure of one of the angles can be found by subtracting the measure of the known adjacent angle from the measure of the larger combined angle.

Step - by - Step Solution:

1. Notice that is composed of and

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