# Construction Of An Evolute Of A Circle

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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

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

Analytical Geometry### Source

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

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