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A hexadecagon is a 16-sided polygon with 16 angles.

Petrie polygons

The regular hexadecagon is the Petrie polygon for many higher-dimensional polytopes, shown in these skew orthogonal projections, including:

A15 15-simplex t0.svg
15-simplex
B8 8-cube t7.svg
8-orthoplex
8-cube t6.svg
Rectified 8-orthoplex
8-cube t5.svg
Birectified 8-orthoplex
8-cube t4.svg
Trirectified 8-orthoplex
8-cube t3.svg
Trirectified 8-cube
8-cube t2.svg
Birectified 8-cube
8-cube t1.svg
Rectified 8-cube
8-cube t0.svg
8-cube
D9 9-cube t8 B8.svg
t7(161)
9-cube t7 B8.svg
t6(161)
9-cube t6 B8.svg
t5(161)
9-cube t5 B8.svg
t4(161)
9-cube t4 B8.svg
t3(161)
9-cube t3 B8.svg
t2(161)
9-cube t2 B8.svg
t1(161)
9-demicube.svg
9-demicube
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