Step 1 :1. Calculate JK: \( \sqrt{(2-(-1))^2 + (3-3)^2} = 3 \)
Step 2 :2. Calculate JM: \( \sqrt{(-1-(-1))^2 + (3-(-5))^2} = 8 \)
Step 3 :3. Calculate perimeter: 2(3+8) = 18