From Math Images

Involute
Field: Geometry
Image Created By: Xah Lee
Website: Involute-Visual Dictionary of Special Plane Curves

Involute

A colorful illustration of different involutes of a circle obtained by rolling a line around the circle.

Basic Description

An involute is a special type roulette curve formed by rolling a line along another fixed curve. The curve formed is the trace left by the endpoint of the line as it rolls. In general, a roulette is a curve formed by rolling a moving curve along a fixed one. In this case, rather than having a moving curve, we use a moving line.

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