And what about the triangle?

It's this whole triangle.

IMF, that's that one right there.

That's what the triangle is going to look like.

That is the sum of all the interior angles of a triangle

All these cattle belong to the Triangle?

You've just proven that all three sides of the left triangle are congruent to all three sides of the right triangle.

I'll do it on this right one here.

AMO and we can set up the same relationship for CMO

Well, one way to do that is to write a proof that shows that all three sides of one triangle are congruent to all three sides of the other triangle.

Triangle GMH must be congruent to IMF.

And if I were to poke all the three legs of this in the three vertices of this triangle,

Ta dah!

And all three points of this triangle are on the circle

This is probably the right angle for the right triangle.

ABD looks like it's a mirror image of DBC.

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

Prove that triangle ABD is congruent to to triangle CBD.

Triangle FMG must be congruent to triangle HMG.

We already know that the sum of the interior angles of a triangle add up to 180 degrees

Which of the following could not be a measure of an exterior angle of the triangle?

So I think this is a good time to introduce what an exterior angle even is.

And if I were to poke all the three legs of this in the three vertices of this triangle, I would make a tetrahedron.

Which of the following could not be a measure of an exterior angle of the triangle?

Ours trying, we're gonna winterfeed 10,000 head.

So that first small triangle, that green triangle we did, is sine of x.

Which theorem or postulate can be used to prove that AED is similar to BEC.

Plus, the two triangles are congruent because of the side side side congruence theorem for triangles.

We're seeing that the three perpendicular bisectors of the three sides of this triangle they do definitely intersect, but they're intersecting at a point outside of that triangle

Which of the following statements must be true if triangle GHI is similar to triangle JKL?

The way you can think about it, with the 4 sided quadrilateral is, we already know about this the measures of the interior angles of a triangle add up to 180 so maybe we can divide this into 2 triangles

We know that triangle ADC is going to be congruent to triangle ABC and we know that by side side side congruency

And then we see that triangle AEC must be congruent to triangle DEB by side angle side

So you could say by SAS, triangle TRP is congruent to triangle TAP.

But who knows what the transformation does to everything in between, to all of these other the actual sides of the triangle.

With Myanmar as its heartland, the notorious Golden Triangle in mainland Southeast Asia is the world s second largest producer of opium after Afghanistan.

In geometry class, they always teach you that if you know that the ratio of two of the sides are equal and that the angle between them are equal, then that's sufficient to say that it's a similar triangle.

So by RSH we know that triangle AMO is congruent to triangle CMO by RSH , by the Rsh postulate

Known as the Godfather of the Golden Triangle , Naw Kham led the 100 strong Hawngleuk Militia in the Shan State border town of Tachilek in Myanmar which engaged in drug trafficking, kidnapping and hijacking.