The pedals of a deltoid with respect to one of its cusp, vertex, or center is called a folium, bifolium, and trifolium respectively. They are called n-foliums because the curves have n loops. However, folium and bifolium are not roses. Only the trifolium is a rose. Properties Rose as Hypotrochoid Roses are special cases of hypotrochoids .
Roses are probably also epitrochoids.
Prove or disprove it. More to be done here. Also, the double generation. Related Web Sites see Generic Reference Page . MacTutor Famous Curve Index .