Find measure of vertical angles (Full video)

Khan Academy
Supporting grades: 7

Description: Given two intersecting lines and the measure of vertical angles, watch as we solve to find the measure of the remaining angles. Created by Sal Khan. So let's try to figure out what all of these angles are. You see that this angle out here, let me do it in a color I haven't used yet. This entire angle over here, which is going to be 60 degrees plus x, that's a vertical angle with this angle, the one that has measure 7x.

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