Leg of right triangle definition
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In a right triangle, the leg is one of the two sides that form the right angle. It is also known as the cathetus or the adjacent side. The other side of the right angle is called the hypotenuse, which is opposite to the right angle. Each of the two legs is adjacent to one of the acute angles of the triangle. The length of the legs determines the dimensions of the triangle and is used to calculate the area, perimeter, and other properties of the triangle.