Using Interior and Exterior Angles to Find Unknown Angle Measures

The video tutorial teaches how to find unknown angle measures using interior and exterior angles. It begins with a review of supplementary angles, emphasizing that they add up to 180 degrees. A common mistake is highlighted, where angles are incorrectly assumed to be supplementary without sharing a vertex. The tutorial then presents a practical example involving a patio and garden, demonstrating how to calculate an unknown exterior angle using the known interior angle. The lesson concludes by reinforcing the concept of solving for unknown angles using these principles.

What is the relationship between interior and exterior angles that share a vertex?

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How do you calculate the measure of angle x if it is supplementary to a 30-degree angle?

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