So, this is from angle side angle congruency

The world looks better from this angle.

This angle plus this angle is going to be equal to this angle.

Or this angle plus this angle plus this angle is equal to 180.

And then this angle and this angle.

This angle is equal to this angle.

So this angle, this red angle and this brown angle have to be supplements.

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.

This angle, this whole angle is 180 degrees.

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

Well, from this angle things are shaping up nicely.

Then this angle, this interior angle right over here

Let's call this angle y and this angle y.

We know this angle and we know this angle.

And this angle is a supplement to this angle.

We also know since this angle corresponds with this angle, this angle will also be 110 degrees.

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

So whatever angle this green angle is, this angle is going to be as well

This angle is different than that angle.

That angle is equal to this angle.

This angle.

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

Carol, I've photographed this can of wax from every angle.

And this right over here, this little marks says that this angle is equal to this angle is equal to this angle.

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.

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

So if this angle is y what is this entire angle

And this angle is congruent to angle 1, then angle 1 and angle 2 must be supplementary.

This is the opposite angle of this angle, so this is also x.

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

Select this angle

So angle CAF and then this angle out here

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

Now if this angle is theta, what's this angle going to be?

And we call this angle theta 1, and this angle theta 2.

It was opposite this angle, but BC is adjacent to this angle.

This y angle is equal to this y angle because it's corresponding.

How do we know that this angle is equal to this angle?

So this green angle plus this purple angle is equal to 180.

So you know that if this angle and this angle are supplementary.

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

we know that this is DBA right over here we also know that angle DBA and angle DBC are supplementary this angle and this angle are supplementary, their outer sides form a straight angle, they are adjacent so they are supplementary which tells us that angle DBA, this angle right over here, plus angle DBC, this angle over here, is going to be equal to 180 degrees.

And this angle plus that angle plus that angle have to be equal to 180.

Well, if this angle is y, then this angle is opposite to y.

So the angles in the quadrilateral itself are this angle and this angle.