@property<EOL><INDENT>def inertia_tensor(self):<DEDENT>
return get_inertia_tensor(<EOL>self.elements, self.coordinates<EOL>)<EOL>
Return inertia tensor of a shape.

The inertia tensor of a shape is weighted by the mass assigned to each
coordinate (associated with the element). In case if `elements` is
`None`, mass of each element = 1 and this returns a non-weighted value.

Returns
-------
:class:`numpy.array`
   The inertia tensor of a shape.