text: class Solution:
      def isBoomerang(self, points: List[List[int]]) -> bool:
          x1, y1 = points[0]
          x2, y2 = points[1]
          x3, y3 = points[2]
          return (y1 - y2) * (x1 - x3) != (y1 - y3) * (x1 - x2)
  