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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 triangle_normal(a, b, c):
 """Return a vector orthogonal to the given triangle Arguments: a, b, c -- three 3D numpy vectors """

    normal = np.cross(a - c, b - c)
    norm = np.linalg.norm(normal)
    return normal/norm