All right, bend over.

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

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

Angle BDC over here, it is an alternate interior angle with this angle right over here with that angle right over there

You could say that this angle right here angle AB, angle ABE

They tell us that this whole angle right here is a right angle.

Then this angle, this interior angle right over here

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

Geometric Right Angle Triangle

This angle right here.

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

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

So this whole angle over here is a right angle

Now if this angle over here is a right angle

This is a right angle right there.

This right here is a right angle.

And so this angle right over here is equal to this angle right over here

It's opposite the right angle.

This larger angle right here.

Well, it's the angle, right?

This is a right angle

This angle right over there

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

So this angle is psi, this angle right here is theta.

So this angle right over here needs to be congruent to that angle right over there.

And so they drew this right angle over here so we know that angle FAH is a right angle because of this half box right over there.

This angle is equal to this vertical angle, is equal to its vertical angle right over here and that this angle is equal to this angle that is opposite the intersection right over here.

This angle right here in this example, it's the top left angle will be the same as the top left angle right over here.

The vertex angle, I'm guessing, they mean is this angle right there.

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

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

This is not a right angle.

As that angle right over there

Obviously, this is a right angle

You have the obtuse angle and something in between, which is the right angle, where you have the A in SSA is a right angle.

DBC, right over here, angle DBC is going to be congruent to angle

So in this situation right over here, our angle, the angle in our

SSA, the angle was acute. This is an acute angle right over here.

So this is its measure right over here you could say that this is alternate interior angle to angle ECD to this angle right over there

This angle right here is opposite to it, so this angle right here is going to be 101 degrees.

If this is 121 degrees, then this angle right over here is supplementary to this angle right over there.

We'll this right here is equal to 92 degrees, and this angle right here is vertical with that angle.

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.

This is probably the right angle for the right triangle.

Well, clearly, in this case, angle H right here, this is an obtuse angle.