# Construction Of An Evolute Of A Circle

## Description

An illustration showing how to construct an evolute of a circle. "Given the pitch p, the angle v, and radius r. Divide the angle v into a number of equal parts, draw the radii and tangents for each part, divide the pitch p into an equal number of equal parts, then the first tangent will be one part, second two parts, third three parts, etc., and so the Evolute is traced."

## Keywords

analytic geometry, analytical, circle, circles, construct, evolute, evolutes, geometric construction, geometry

## Galleries

## Source:

Albert A. Hopkins *Scientific America: Handy Book Of Facts And Formulas* (New York: Munn & Co., Inc., 1918) 39

Courtesy the private collection of Roy Winkelman