mindmap root((协调)) symmetry implies a median line or axis on either side of which the details correspond in size, form, and placement: the ~ of a Greek temple. proportion implies a grace or beauty that stems from the measured fitness of every detail and the consequent perfection of the whole: a statue of perfect ~. balance is sometimes equivalent to symmetry but distinctively suggests equality of values and a massing of different things such as light and shade or contrasting colors that offset each other: a painting in which light and dark were in perfect ~. harmony suggests the pleasing aesthetic impression produced by something that manifests symmetry, proportion, or balance, singly or in combination: achieved ~ through the imaginative use of color.