Name: Information for congruency
Uploaded: 2020-03-27T17:37:05.000Z
Duration: 2 min 17 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

- [Instructor] So I have two triangles depicted here

and we have some information about each of those triangles.

We know that this side of this left triangle

and then we know that this angle is 50 degrees.

And on this triangle we see some things that look

This triangle, this side has length eight.

And this angle right over here has a measure of 50 degrees.

because they actually aren't, can you definitively say

Or could you definitively say that they aren't congruent?

Would you have to say that there's not enough information?

So essentially what we have here are two pairs of sides

but that angle is not between those two sides.

then we could use side, angle, side, side, angle, side

to deduce that, hey, these are congruent,

I'm saying the side and the side before the angle,

because if I don't do that it becomes a little bit crass.

is side, side, angle sufficient to prove congruency?

is that you can actually construct different triangles

Now you might be saying, hey, that's not what it looks like.

We have to go based on the information they've given us

and so you could just as easily, based on the information,

two different triangles that are clearly not congruent,

the exact same constraints, tells you that

Subtitles ListPlay Video

Information for congruency

essentially

assume

scale

familiar