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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def is_conformal(self):
 """True if the transform is conformal, i.e., if angles between points are preserved after applying the transform, within rounding limits. This implies that the transform has no effective shear. """

        a, b, c, d, e, f, g, h, i = self
        return abs(a * b + d * e) < EPSILON