<span>Symmetrical balance
is achieved when both sides of a composition look exactly the same by arranging
elements on either side of the center of a composition in an equally weighted
manner. It can also be thought of as 50/50 balance or a mirror image.
Symmetrical balance is used to achieve the effect of order, clarity and
consistency.</span>
Answer:
It was found in the Blombos cave in South Africa and dates back more than 70,000 years. This discovery suggests that abstract thought in humans occurred much earlier than once thought, as seen with the complex geometric array of carved lines.
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