Rolling Regular Polygon 滾動的正多邊形

Observe the locus of the vertex/ center of the regular polygon. What happens if n is very large?
Note that OP is fixed.[br][br]GeoGebra 互動數學教室 [url]http://www.geogebra.hk[/url]
– Alex CHIK

Information: Rolling Regular Polygon 滾動的正多邊形