def get_area(self):
pt1 = ModelData.dictVertices[self.__v[0]]
pt2 = ModelData.dictVertices[self.__v[1]]
pt3 = ModelData.dictVertices[self.__v[2]]
pt1pt2 = SimpleMath.tuple_minus(pt2, pt1)
pt1pt3 = SimpleMath.tuple_minus(pt3, pt1)
return 0.5 * SimpleMath.vector_length_3(SimpleMath.cross_product_3(pt1pt2, pt1pt3))
