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The template for the IH16 system is any hexagon having four equal adjacent sides, those in the first pair and in the second pair making angles of 120° with one another; the remaining adjacent sides are also equal to, and make an angle of 120° with one another. An example is shown below. Only the first four of the six sides can be shaped, as indicated by the half-arrows. The template and any tile shape formed from it have an axis of reflection symmetry as indicated by the dog pattern.
A translation cluster is
A section of the tiling formed from this template is also shown below, with a translation cluster outlined. The two basic translations are indicated by the vectors drawn from the highlighted cluster. The tiling has two types of centres of three-fold rotation symmetry, as well as an axis of glide and another of mirror reflection symmetry. An example of each is indicated. The tiling symmetry group is p31m.
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