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

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

It says a triangle has, at most, one obtuse angle.

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

He began by assuming, that in triangle ABC, angle A and B are both obtuse.

less to get to the other line then you would over here. here, you would have to move all the way over there here you only have to move it a little bit so the acute angle is less than a right angle so you might imagine already what an obtuse angle is it is greater than a right angle so let me draw a couple of examples of obtuse angles so an obtuse angle might look like

That's what obtuse means.

You're not that obtuse.

For example, when a woman lies on her back, the angle of the breast apex becomes a flat, obtuse angle (less than 180 degrees) while the base to length ratio of the breast ranges from 0.5 to 1.0.

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

That's one angle here's another angle.

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

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.

So what angle in this triangle does any angle here equal that angle?

And then this angle and this angle.

Angle 1 is congruent to angle 4.

Angle 1 is congruent to angle 3.

And an acute angle is an angle

Angle

angle

Angle

angle

Angle

Angle

Angle

Angle

Angle

Angle

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.

The corolla tube is 2.5 3 mm long with 2 mm wide obtuse lobes.

I wanted to introduce you to are acute angles, right angles, and obtuse angles.

So angle 2 is congruent to angle 3.

Or angle 1 is congruent to angle 2.

This angle, this whole angle is 180 degrees.

So, this is from angle side angle congruency

This one and this one are going to be obtuse so very simple idea if one line or if one ray is relative to the other one is straight up and down versus left to the right or is completely upright then we're talking about a right angle if they are closer to each other if you had to rotate them less you're talking about a acute angle if you had to rotate them more you are talking about an obtuse angle and I think if you look at them visually it's pretty easy to pick out

And at first you might say, wait, is this angle and that angle vertical angle?

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

And we see that this angle and this angle, this angle has a measure of 4x, this angle has a measure of 2x.

Let's say that this is angle alpha and this is angle beta. Than this whole angle right here is angle alpha plus beta.

Then we know that this angle plus this angle plus this angle has to equal 180.

Arc angle is smaller than falloff angle in rainbow.

Statement one, angle 2 is congruent to angle 3.

And that angle 4 is congruent to angle 3.