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symmetry is also referred to as balance
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there are two types of balance/symmetry:
formal balance/symmetrical
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same-sized items on both sides of a layout
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gives a sense of stiffness
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use it for formal designs (like newspapers)
informal balance/asymmetrical
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more dynamic than formal balance
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provides more design flexibility
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provides multiple points of attraction
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produces more appealing designs
how to achieve good balance
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use modular layouts for symmetrical designs
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use columns, rules, and borders for symmetrical designs
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make good use of white (negative) space