 In this video, I'm going to talk about how to identify the transversal and classify each angle pair. This goes along with your transversals and the angle pairs that are formed when you have different transversals. Just a couple of examples of each one of these. So we're going to talk about transversals, alternate interior angles, alternate exterior angles, corresponding angles, and same-side interior angles. So we're going to talk about all those different ones. If you don't know what those are, you might want to watch the previous video of mine that talks about all those vocabulary words. Okay, so number one, we're going to look at angle one and angle three. Okay, we're going to look at those ones and try to identify the transversal and classify each angle pair. Okay, so if I look at angle one right here, angle three right here, the first thing I want to do is I want to identify the transversal. Now, in this case, the transversal is a line that intersects two other lines. That's what the transversal is. Now, in this case, when we're identifying it, what might help is that a transversal helps to create the two individual angles. So notice angle one is helped made by L. Notice angle three is helped made by L. So L is going to be my transversal, helps make one, and it helps to make three. So that's going to be my transversal. Transversal using my abbreviation is L. So that's the first part, identifying the transversal and now classify each angle pair. So I'm going to classify it as alternate interior, alternate exterior, corresponding or same side interior angle pairs. Okay, so now as I look at it, notice the angle one, the first thing I notice, angle one, angle three, here's the transversal. Both of them are down. Both of them are down from the transversal. So I would say that they are on the same side of the transversal. And what that does is that kind of knocks out, they can't be alternate interior, can't be alternate exterior. So it's either going to be corresponding or it's going to be same side interior angles. Okay, so now the obvious choice might be, oh, well, they're on the same side of the transversal. It's going to be same side interior. Well, not necessarily. Three is on the inside. If you look at this, three is on the inside. Here's the transversal. Three's on the inside. Angle two is on the inside, but angle one is on the outside. Angle one's out here. When you're just looking at these lines, M and N, three and two are in between there. So they're the inside ones. One is on the outside. So they're not same side interior. We're talking about three and one. Remember, we're talking about three and one. They're not same side interior. So the only thing that we have left is corresponding angles. Well, now look at corresponding angles. Corresponding angles are in the same position. One is down into the left. Three is down into the left. They're in the same position. It doesn't quite look like it with a little bit different angle for these lines here, but they are in fact in the same position. So these are in fact corresponding angles. Notice the notation here. Notice the abbreviations that I used here. C-O-R-R period. That's corresponding angles, box vias. That's corresponding angles. So a lot of abbreviating I'm going to do here. Okay, so next up on the list is angles two and six. Two and six. So notice two is right here and six is here. So we want to identify the transversal, which is the line that helps to create two and six. Notice n right here helps to create two and six. So my transversal, so my transversal is line. What was it again? N, line N. So now I want to identify is it corresponding, alternate interior, alternate exterior, or same side interior angles. Okay, so we're looking at two and six. Two and six. Well, the first thing I notice is that I have to cross over, cross over the transversal to get to from angle to angle. So that tells me it's either going to be alternate interior or alternate exterior angles. Okay, we'll also notice that this line L and this line M help to create two and six. And two and six are in between right here. Two and six are in between these two. So that's this right here is the interior. This is the inside. So that tells me two, six opposite sides of the transversal and they're on the interior. These ones are going to be alternate, alternate interior angles, alternate interior angles. Notice the abbreviations that I've used. These abbreviations save a lot of time, a lot of effort. We're writing everything out. Okay, alternate interior angles. All right, next, next up. Angles four and six, angles four and six. So let's go over here. We're using six again, using six again, but then we're going all the way up here to four, all the way up here to four. So notice M right here is going to be my transversal. Helps make six and helps make four. Okay, so my transversal, transversal is line M and then now it's either going to be alternate interior, alternate exterior, corresponding or same side interior. So let's take a look. Well, notice that six and then to get all the way to four, I have to cross over the transversal. So go from four back to six. I have to cross over the transversal. So that tells me right away it's going to be an alternating. Okay, now I only have two alternating ones. It's either alternate interior or alternate exterior. So are these angles inside or are the outside? Notice that four, okay, four is here, six is here. These angles are on the outside. Notice line L and line N put five and three on the inside, but in fact, six and four, which is the ones that we're talking about over here, angle six and angle four, they're on the outside of these intersections. Okay, so this is actually going to be an example of alternate exterior, alternate exterior angles. All right, notice the abbreviations, alternate exterior angles, alternate exteriors. Okay, you want to also understand not only what the vocabulary is, but also what the abbreviations for the vocabulary is. It can get kind of confusing sometimes. All right, last, last leaf, two and three. Angles two and three. So let's get this done quickly. Angle two is right here. Angle three is right here. My transversal to help create both of them is L. So my transversal trans, get that in there. Transversal is line L and then what are they? Now notice that they're on the same side of the, of the transversal, lost the word, same side as the transversal and they're on the inside of the intersections. They're both on the inside. So this would be same side interior angles. Same side interior angles. Okay, notice the abbreviation. SS stands for same side. All right, those are all that's all we're supposed to do. Identify the transversal and classify each angle pair. Identify the transversal and classify each angle pair. So the classification that we have are corresponding angles, alternate interior angles, alternate exterior angles and same side interior angles. Those are the four that we have for right now. All right, and that was it. That was it. Now hopefully you understand the notation, like with the angles here and the abbreviations with all these. So because sometimes when you learn vocabulary, it's a little bit difficult to understand it with all the notation and with all the abbreviations. Hopefully, hopefully you understood all that.