It also separates the circle into two segments - the major segment and the minor segment. The formula to calculate the arc length is: \(\text{Arc length} = \frac{\text{angle}}{360^\circ} ...

A chord separates the circumference of a circle into two sections - the major arc and the minor arc. It also separates the area into two segments - the major segment and the minor segment.

There are 7 circles inside. Each circle has it's own trigger that read circle program and responds for opening/closing specific segment. Full assembly instructions are includede in the video!