If the objects are symmetric, this means that the object appears the same (to be mirrored or reflected) along an axis.
(the objects; are; symmetric) (the object; to reflected; ) (this; means; that the object appears the same (to be mirrored or reflected) along an axis) Context(this means,List([30, 40))):(the object; appears; )
this means,List([30, 40))
the objects the object this the object
are to reflected means appears
symmetric
that the object appears the same (to be mirrored or reflected) along an axis