Constructing a Regular Pentagon with Ruler and Compass

This shows a step-by-step ruler and compass construction of a regular pentagon. The construction is due to H. W. Richmond, "A Construction for a Regular Polygon of Seventeen Sides," Quart. J. Pure Appl. Math., 26, 1893 pp. 206–207.

External Links

Pentagon (Wolfram MathWorld)
Perpendicular Bisector (Wolfram MathWorld)

Permanent Citation

Oleksandr Pavlyk
​
​"Constructing a Regular Pentagon with Ruler and Compass"​
​http://demonstrations.wolfram.com/ConstructingARegularPentagonWithRulerAndCompass/​
​Wolfram Demonstrations Project​
​Published: February 19, 2008