Before revision:  an Inconic is tangent to the sides. We introduce the Circumbilliard: the circumellipse of a generic triangle which is an Elliptic Billiard (EB) to the latter. Given a fixed EB, we study varying Circumbilliards obtained from triangles derived from the 3-periodic family .
After revision:  an Inconic is tangent to the sidelines. We study the variable geometry of certain conics derived from the 3-periodic family .