Well angle BDC and I'm just gonna mark this up here

Obtuse, I kind of imagine something that's kind of lumbering and large, so that's how I remember it, or you can say it's not acute, it's not nice and small and pointy, so that's one way to think about it.

Now, we can use that exact same logic

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

Now the other thing that we know

Now what else can we figure out?

Arc angle

Shadow Angle

Degrees

Radius

Angle

Angle

X angle

Y angle

Angle

X angle

Y angle

Do I do it upside down?

Obviously, this is a right angle

So we could draw that here.

So lets keep rotating it, so our other side points to 70 degrees, so it is an acute angle.

And that's the best angle of the courtyard?

An angle of 90 degrees is called a right angle.

Some people would call this the reflexive property

And they want to know, what is a measure in degrees of the

So, for example, we know that angle CDE is going to be congruent to angle BAE

Well, you might realize that we've just shown that both of these triangles, they have this pink angle and they have this side in common and then they have the green angle

Trigonometric functions use degree mode for angles.

But this is just general terminology for different types of angles

Angle value in degrees.

Angular velocity

Seed radius

Cut off angle

Angle Mode

Watermark Angle

So angle angle side orange sorry, orange angle white angle side

Now, we know that corresponding angles must be congruent

What does a non acute angle look like?

Even if your paper doesn't have an edge, you can just fold it and ta da Angle A Tron!

C A sorry CAE I should say is congruent to triangle CAE

Now we want to use the same sides white angle yellow side then orange angle

We were given if that is 90 degrees then this angle over here is supplementary to it and it also has to be 90 degrees.

So, for example, we wanna prove that CAB is congruent to BDC

Now, both of these triangles are also isosceles triangles, so their base angles are going to be the same. So that's one base angle, that's the other base angle.

By what degree?