From the course: Preparing for the GMAT

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Congruent triangles

Congruent triangles

From the course: Preparing for the GMAT

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Congruent triangles

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- [Instructor] So occasionally in a GMAT question, you might have to prove to yourself that two triangles that you see are congruent, IE identical by comparing their sides and angles. So in this video, we'll discuss the basics of triangle congruency. So let's say I have a couple of triangles here, they look alike, but I want to make sure. So I have a couple ways of proving this. One way is called side, side, side, which I'll abbreviate as SSS, and this is if all the sides are the same in both triangles, that's an easy way to tell that they're the same triangle. In other words, they are congruent. Another way that we tell is side, angle, side. So, SAS, so that would be if this side, this angle, and this side were the same as this side, this angle, and this side in the other triangle, we would also be able to prove that they're congruent or identical. And then the final way is angle, side, angle. So here if we knew that this angle, this side, and this angle were the same as this angle…

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