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symmetrical (EN)
adjective

adjective “symmetrical”

base form symmetrical (more/most)
  1. having the same size and shape on both sides; being the same on both sides
    The butterfly's wings are beautifully symmetrical.
  2. (in mathematics) remaining the same when certain changes are made; invariant under transformations
    A square is symmetrical with respect to rotations of 90 degrees.