Using Parallel Lines to Find the Measure of Angles

The video tutorial explains the relationship between angles 55 and X, identifying them as supplementary angles whose sum is 180 degrees. The teacher demonstrates solving for X using a linear equation, resulting in X = 125 degrees. The lesson then explores the relationship between X and Y as alternate interior angles, concluding that Y also equals 125 degrees. The importance of justification in mathematical solutions is emphasized throughout.

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