The constructible regular 10-sided Polygon with Schläfli Symbol . The
Inradius , Circumradius , and Area can be computed directly from the formulas for a general
regular Polygon with side length and sides,

(1) | |||

(2) | |||

(3) |

Here, is the Golden Mean.

**References**

Dixon, R. *Mathographics.* New York: Dover, p. 18, 1991.

© 1996-9

1999-05-24