But... from a certain angle... yes.

So, this is from angle side angle congruency

But we covered it from a different angle.

You start by teaching angles an acute angle, a right angle, an obtuse angle, a straight angle.

Maybe if I come in from a different angle.

That's angle A, that's angle D.

This angle down here is a vertical angle, that's gonna be a right angle

It's a joint of tubes. You start by teaching angles an acute angle, a right angle, an obtuse angle, a straight angle.

So, we know from the contradiction that the measure of angle A cannot equal the measure of angle C.

And angle A is congruent to angle D.

Angle 1 is a complement of angle 2.

Angle 1 is a supplement of angle 2.

The only way that this would be equal to 180, angle 3 plus angle 4, is if angle 4 were a 90 degree angle, and angle 3 were also a 90 degree angle.

This function transforms a radian angle to a degree angle.

This function transforms a degree angle to a radian angle.

Looked at from this angle, theirs becomes a story about reading.

And this angle is a supplement to this angle.

It was a right angle, it was a 90 degrees angle

The world looks better from this angle.

So that is a 90 degree angle, a 90 degree angle and that is a 90 degree angle over there

I could also draw an acute angle maybe an angle that is formed from an intersection of two lines, so this angle would be acute, and so will this angle.

Given angle A.

So this whole angle over here is a right angle

Now if this angle over here is a right angle

That is a right angle and then this is a right angle

This is a right angle and then, this is a right angle

These features, however, were seen from a low angle, hindering useful observation.

And you can see from our measure right over here that that gives us a 90 degree angle, which is a very interesting angle that shows up many times in geometry and trigonometry, and there's a special word for a 90 degree angle it is called a right angle.

So if this is angle A, this is angle B, and then let's call this angle C.

And the same thing is true, angle A and angle X.

You could have written angle A is congruent to angle C.

Measure of angle A is equal to measure of angle C.

When moving from a denser medium into a less dense one (i.e., ), above an incidence angle known as the critical angle , all light is reflected and .

But when you're the victim, things look a lot differently from that angle.

Angle ABC, this angle, is the same as angle DBE.

This is clearly a right angle, or a 90 degree angle right over here.

This is a right angle this over here is gonna be a vertical angle

So, if we say, measure of angle A, plus measure of angle

Well, let's see, what's a corresponding angle to this angle right here?

So he's saying that angle A and angle B are both obtuse.

This means that you have an angle, an angle, and a side.

This is essentially saying that angle A is congruent to angle C.

Statement two, angle 1 is congruent to angle 2, angle 3 is congruent to angle 4.

So the measure of angle DBC would be equal to 90 degrees and we already know that 90 degrees is a special angle, this is a right angle, this is a right angle.

It can be seen from every angle. Very conspicuous!