Escher style Geometry Art from J. R. Masterman's 9th grade geometry class

caps for sale, a first-time tessellation by a child

CAPS FOR SALE by Alexa

This tessellation is Escher style, not abstract geometry, because it shows us a "tile" (repeated) shape that, in silhouette, clearly looks like something-- in this case, heads wearing 1920s hats.

We can say that this tessellation is definitely translational (slide) tessellation symmetry, since the faces in each row are simply moved from one place to another without rotating. The fact that every other row of heads is a rotation of the one above it is a purely arbitrary choice made by the artist, so we can call this a rotational (spin, turn) tessellation symmetry too, though it needn't have been done that way. The whole theme might be considered a sort of frieze-- a long narrow row of (head) shapes with a flat top and bottom.