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Angles

Angles

From the course: Test Prep: GRE

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Angles

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- [Voiceover] So the easiest way to start visualizing angles are to consider what happens if we have two lines that intersect. So these intersecting lines form four angles. There's this angle, this angle, this angle and this angle. So if we have two lines intersecting like this to create four angles that intersection points we call the vertex. So the vertex is that intersection point and each angle has a vertex as well. So that point function is the vertex of each angle. So I'm considering this angle. For instance, that point is its vertex. So if we were to try to define these angles in terms of how they relate to each other. We call these angles like this one here and this bottom one here. Those are gonna be equal. Those are vertical angles and have equal measure. So whatever they have measure of the top one is say that's 120. Then we would know the bottom one has a angle measure of 120 as well. And that 120 degrees is the measure and it kinda measures how many degrees are in that…

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