I'm going to guess that, by "rectangular", you mean "right" (or "right-angled"); and that, by "gravity", you mean "altitude". So you've got a 90-degree triangle, with the base being the hypotenuse, and the perpendicular line from the right angle to the base has a length of 10 inches.The perimeter of a rectangular triangle equals 48 inches, the gravity line drawn between the hypotenuse and the right angle is 10 inches long . Lenght of each side?.
Ah. That would be the "centroid", the point where the three medians intersect.Hi, with " gravity line" I mean that this line passes trough the center of gravity of the triangle, (this is the point where the three lines that are drawn from each vertex to the middle of the opposite side of the triangle meet each other). And the triangle has a 90 degree angle.