regular polygon
The points attribute of polygon is animated showing regular polygons.
The polygons are given in gray in the background for comparison.
The blue stroked polygon is animated discrete with animate by default,
a red stroked polygon below is animated with set animations
with the same timing. If something red gets visible, this indicates
an error.
Because SVGT1.1 does not specify, that a polygon must be rendered
in a way that produces the same result as if the related path
is specified, discrete animation is possible, even if the values have different
numbers of points.