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Finding Angle Measures Between Intersecting Lines

This video introduces the idea of finding missing angles at the intersections of various lines. These example problems use the idea of complementary, supplementary, and vertical angles and their relationships to solve for missing angle measures. Supplementary angles are pairs of angles that forma line or add up to 180 degrees. Complementary angles are pairs of angles that form a right angle or add up to 90 degrees. Vertical angles are formed from two intersecting lines. They are opposite from each other at the intersection of the lines and are equal to one another. Khan Academy exercise to practice: 1. https://www.khanacademy.org/math/get-... EulersAcademy.org