Geometry

Question Analysis:

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

Key Concept Explanation:

When two adjacent angles share a common vertex and side, 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. Observe that is composed of and

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