We can use the distance formula to solve: √(x2-x1)²+(y2-y1)²
Side SA:
√(2-(-2))²+(3-(-3))²
√4² + 6²
√16 + 36
√52
≈ 7.21
Side AN:
√(5-2)²+(-4-3)²
√3² + -7²
√9 + 49
√58
≈ 7.62
Side NS:
√(-2-5)²+(-3-(-4))²
√-7² + 1²
√49 + 1
√50
≈ 7.07
Therefore, the shortest side is "NS"
Best of Luck!