The arrangment for the Mona Lisa is very simple - some times the best inventions are,
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Look closely you can see where some geometric shapes have been highlighted in red. Can you see more circles and triangles?

More shapes makes the picture more "active".
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This one is not as obvious at first glance - however, there is a diamond formed in the middle, which is a shape that is well known to hold attention, like the Mona LIsa, but not the same.
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What effect does all the circles have on Mt Fuji in the background?
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