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.

Also see

 * Length of Arc of Cycloid


 * Definition:Cusp of Cycloid