Build closed shapes that lie in a plane.
Build Polygons

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What is the simplest 2 dimensional shape? What is a simplex?
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How many types of polygon are there? How can you categories different types of 2 dimensional shape? What is a bow-tie quadrilateral?
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Who are Euclid and Wassily Kandinsky? What do they have in common?
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What 2D shapes tessellate the plane? What about the sphere?
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What was the first legally trademarked logo?
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How can you create an original graphical logo, emblem, or device for yourself or someone else using polygons as inspiration?