Finding congruent triangles | Congruence | Geometry | Khan Academy

Using the SSS, ASA, SAS, and AAS postulates to find congruent triangles

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Geometry on Khan Academy: We are surrounded by space. And that space contains lots of things. And these things have shapes. In geometry we are concerned with the nature of these shapes, how we define them, and what they teach us about the world at large--from math to architecture to biology to astronomy (and everything in between). Learning geometry is about more than just taking your medicine ("It's good for you!"), it's at the core of everything that exists--including you. Having said all that, some of the specific topics we'll cover include angles, intersecting lines, right triangles, perimeter, area, volume, circles, triangles, quadrilaterals, analytic geometry, and geometric constructions. Wow. That's a lot. To summarize: it's difficult to imagine any area of math that is more widely used than geometry.

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[sqiize]

yo just came here 1 night before my exam and i see so many people struggling, makes me feel so much better

[picdes]

"He is not a able to find a congruent companion"

Story of my life ;_;

[nanetteisontheinternet]

“This is just a lone (triangle) unfortunately not able to find a congruent companion” THE BOTTOM LEFT TRIANGLE IS ME

[firerulesthesky]

awesome, just in time for my first statics test!

[chinmaysurej]

This is by far the best explanation of this chapter compared to the others!!!!

[xentaza]

i might go to your school soon i understand much better :)

[lauralitolleson]

ill just be confused for the rest of my life

[armandomartinez]

3 minutes in and I'm already lost.

[arushisingh]

How do you know the triangle is AAS is what I'm not understanding. Why can't u take it as ASA

[maaars]

How is ABC congruent to NMO by AAS when it should be CAB = ONM because it's c first who has the angle and it wont be AAS anymore if you name it ABC beacuse A (angle/A), B (side/s), C (angle/A)?

[BermieLostella]

The teacher explaining how to find congruent triangles

Me: *confusion intestines*

[ellaqyk]

wait, so to determine if it is SSS or AAS you have to start from the 40 degree then go from there, what about when there are different degrees??

[Squeekeys]

Great! this video really clears this concept up.

[JoaoVictor-gopw]

if the angle are the same but the sides aren't is it congruent?

[gamin]

hello fellow human - .... . .-.. .-.. --- / ..-. . .-.. .-.. --- .-- / .... ..- -- .- -. :/

[fallerpilot]

Don't worry ⃤JKL, I don't have a congruent companion either

[DanNguyen-thgp]

but my teacher never puts the angle measure so then what?

[onesandzeroes]

OK, I got the answer later on. This sounds to me strange, though.