So this is actually a little bit of a drawing of a protractor, and what we do with something like a protractor

Where's your pencils, where's your protractor and your hole reinforcers?

He made this cool protractor tool here so that you actually use a protractor to measure the angles there and so the trick here is you actually measure it the way you would measure an angles using an actual physical protractor.

Or think about putting a protractor here to actually measure these angles.

A protractor is kinda like a 180 degree Angle A Tron. It's great at 180 degrees.

And if you put a protractor here and measure it you'd get the exact same measure up here.

If you put a protractor here, you would have one side here of the angle at the 0 degree and the other side would specify that point and if you put the protractor over here, the exact same thing would happen.

So once again I'll put A at the center, and then AC I'll put along this zero degree edge of this half circle or protractor, and then I'll put point AB in the well, assuming I'm drawing it exactly the way that it is over there normally instead of moving the angle you could actually move the protractor to the angle it looks something like that.

I said the vertex of the angle at the center of the protracter, and then, what you wanna do is, either rotate the angle or rotate the protractor in this case you are going to rotate the protractor you wanna rotate the protracor so that the zero angle are look at the zero mark is at one of the sides of the angle and the other side of the angle is within the protractor so lets,try to do that so if may be ,if you wanna do that this zero side it should be at this side of the angle so lets,rotate it

And so it is pointing on the protractor to the let's see this looks like it is the seventieth section, this is the eightieth section, so maybe this is, I would guess this is the 77th section, so this is pointing to right over here.

Vertex of my angle at the center of my protractor.and I want to put one side of my angle at 0 degrees. here are two ways to do this, you could do just this, this is not too helpful as the angle is outside the protractor.

So I'm going to redraw this angle right over here at the center of this protractor, so we can say if this is Y , than Z goes right over here, and then the other ray, ray YX in this circumstance, will go roughly in that direction.

So if you're like me you probably don't carry around a protractor everywhere you go and even if you do, you sometimes you want to have only the angles you want, because you needed a whole bunch without all those other degrees getting in the way.

You would want to put the center of the protractor right at the vertex of where the two lines intersect (The vertex of the angle). and then you want to rotate is preferably at this edge this edge as zero degrees is at one of these sides so lets do it so this edge right over here is right along this line so let me rotate it. so then I'm gonna rotate a little bit further that looks... one more?