Explanation: We are given a right-angled triangle in which: side1 = side2 = x hypotenuse = 4
Now, we can use the Pythagorean theorem to get the length of each of the two legs as follows: (hypotenuse)² = (side1)² + (side2)² (4)² = (x)² + (x)² 16 = 2x² x² = 16/2 x² = 8 either x = -√8 = -2√2 units .........> rejected as length cannot be negative or x = +√8 = 2√2 units .........> accepted value