# Definition:Cycloid/Arc

## Curve

Consider a cycloid traced by a point $P$ on the circumference of a circle.

An arc of the cycloid is defined as being a part of the cycloid traced out by $P$ between the points where it meets the straight line.

## Also known as

Some sources give this as an arch, while others call it a hump.

## Sources

Weisstein, Eric W. "Cycloid." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/Cycloid.html