there are 8 possible semi-regular tessellations :)
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There are eight different types of semiregular tessellations. Also called Archimedean tessellations, they occur when two or more convex regular polygons form tessellations of the plane in a way each polygon vertex is surrounded by the same polygons and in the same order.
A dot in a problem can mean multiply. For example: 7.8=56 It also can mean the arrangement of angles about each vertex point. (Look up semiregular tessellations) It is typed like this: 3.3.4.3.4
An example of a dodecagon would be a semiregular tiling.There are many but some have dodecagons.
Tessellations of regular polygons can occur only when the external angle of a polygon is equal to a factor of 360. As such, the only tessellations of regular polygons can occur when the internal angles of a polygon are equal to a factor of 360. As such, the only regular polygons which tessellate are triangles, squares, and hexagons.
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