code: def _cross_product(x0, y0, x1, y1, x2, y2):
      return (x1 - x0) * (y2 - y0) - (y1 - y0) * (x2 - x0)
  
imports: import math
label_desc: Use image node_id 1 for calling a global function with example usage: _cross_product(x0, y0, x1, y1, x2, y2) and returns: unknown