Geometry

Question Analysis

This question involves the concept of supplementary angles.

Key Concept Explanation

Supplementary angles are two angles whose sum is 180°. This concept is fundamental in geometry for understanding angle relationships.

Step - by - Step Solution

1. Let the supplementary angle be .

2. Based on the definition of supplementary angles, we have the equation .

3. To solve for , we perform the subtraction: .

4. , so .

Option Analysis

A.143 degrees: Correct. Since

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