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# SymPy | Polyhedron.faces() in Python

Polyhedron.faces() : faces() is a sympy Python library function that returns the faces of the polyhedra.

Syntax : sympy.combinatorics.Polyhedrons.Polyhedron.faces()

Return : faces of the Polyhedron.

Code #1 : faces() Example – tetrahedron

 # Python code explaining# SymPy.Polyhedron.faces()  # importing SymPy librariesfrom sympy.combinatorics import Permutation, Cyclefrom sympy.combinatorics.polyhedron import tetrahedron, octahedron  # Using from # sympy.combinatorics.polyhedron.Polyhedron.faces()  # Creating Polyhedrona = tetrahedron.copy()  print ("Polyhedron - faces form : ", a.faces)  a.rotate(0)print ("\nPolyhedron - faces form : ", a.faces)

Output :

Polyhedron – faces form : {(0, 1, 2), (0, 1, 3), (0, 2, 3), (1, 2, 3)}

Polyhedron – faces form : {(0, 1, 2), (0, 1, 3), (0, 2, 3), (1, 2, 3)}

Code #2 : faces() Example – octahedron

 # Python code explaining# SymPy.Polyhedron.faces()  # importing SymPy librariesfrom sympy.combinatorics import Permutation, Cyclefrom sympy.combinatorics.polyhedron import tetrahedron, octahedron  # Using from # sympy.combinatorics.polyhedron.Polyhedron.faces()  # Creating Polyhedrona = octahedron.copy()  print ("Polyhedron - faces form : ", a.faces)  a.rotate(0)print ("\nPolyhedron - faces form : ", a.faces)

Output :

Polyhedron – faces form : {(0, 1, 2), (0, 1, 4), (0, 2, 3), (0, 3, 4), (1, 2, 5), (1, 4, 5), (2, 3, 5), (3, 4, 5)}

Polyhedron – faces form : {(0, 1, 2), (0, 1, 4), (0, 2, 3), (0, 3, 4), (1, 2, 5), (1, 4, 5), (2, 3, 5), (3, 4, 5)}

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