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+%3E%3E%3E from sympy import var, pi, sin, cos%0A%3E%3E%3E var('t', real=True)%09%09# %22t%22 - the parameter%0A%3E%3E%3E Arc = Curve((3*cos(t), 4*sin(t)), (t, 0, 3*pi/4))%09%09#  parametric equations, the interval of the parameter.%0A

Create Curves.py