Geometry

Question Analysis

This question involves the concept of complementary or supplementary angles in a geometric angle - relationship problem.

 

Key Concept Explanation:

When two angles form a straight - line (a linear pair), they are supplementary, which means the sum of their measures is .

 

Step - by - Step Solution

1. We know that the sum of the given angle () and is because they form a linear pair.

Let .

Then we can set up the equation .

To solve for , we subtract from both sides of the equation:

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