Verify that interpreter/viewer has basic capability to handle the 'polygon' shape element and its attributes. Six polygons should be displayed in two rows. There are almost-regular convex polygons, as well as irregular polygons with both concave and convex angles (the right-most two polygons). Different filling, stroking, and filling-plus-stroking properties are applied, as labelled for each polygon, with simple variations of color and stroke width.

Some polygons are explicitly closed (last point equals first point), and some are "open" (omit the redundancy of supplying last point equal to first point), to check the rule that viewers should treat any polygon as if it were a path ending in 'closepath'. In the first row, the left-most two are open, and in the second row, the rightmost two are open.

The rendered picture should match the reference image, except for possible variations in the labelling text (per CSS2 rules).

This test uses 'text' and 'path' elements, as well as fill (solid simple colors), stroke (simple colors and wide lines), font-family ("Helvetica"), and font-size properties within the 'style' attribute.