[adj] exhibiting equivalence or correspondence among constituents of an entity or between different entities [adj] having similarity in size, shape, and relative position of corresponding parts
balanced, bilateral, bilaterally symmetric, bilaterally symmetrical, biradial, centrosymmetric, cruciate, cruciform, even, harmonious, interchangeable, isobilateral, isosceles, proportionate, radial, radially symmetrical, regular, rhombohedral, stellate,
asymmetric, asymmetrical