I think, this is how it works, there are as you've probably heard triangles called special right triangles, there are either 45,45,90 (the interior angles) or 30,60,90, so that being said the largest side is opposite the largest angle, smallest side opposite the smallest angle so on so forth, so that is a 30,60,90 triangle bc 2 sides would have to be the same I think ah I hope that makes sense I apologize if it's wrong best of luck
