It is given that the triangle is isosceles right triangle . And in an isosceles right triangle the legs are equal . Let each leg be of x units. Now we use pythagorean identity, which is





So the length of each leg is 
The answer would be C. This is because the larger the negative numbers get, the less value they have, so -8 would have a greater value than -9.
The probability is 1/2 or 50%.
Hope this helps :)