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  Pattern in Surrounding.


                     Patterns in nature are visible regularities of form found in the natural world.
                       Thesepatterns recur in different contexts and can sometimes be modelled
                       mathematically. Natural patterns include symmetries, trees, spirals, meanders,
                       waves, foams, tessellations, cracks and stripes.


































                     Growing Pattern.

                     Patterns that increase (or grow) according to a certain
                       rule, are called increasing patterns, or growing patterns.
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