This paper proposes a method for determining a development of the rotation surface, which
is the rotation of hypocycloids with 4 branches. It has been chosen a four-cusped …

In this paper it is proposed both a graphical method and a computerized method for
obtaining the an “development” of elongated ellipsoid of revolution. The proposed …

This paper proposes a method for determining an development of the rotation surface is the
rotation of hypocycloids around a vertical axis represents the axis of symmetry of the curve. It …

The paper proposes an approximate graphical method for determining the development of
the revolution surface obtained by means of the deltoid. The approximate development of …

An interesting problem in descriptive geometry is the unfolding of the non-developable
surfaces of revolution. In this paper we start from the two classic methods of approximate …

This paper proposes a method for determining an development of the rotation surface is the
rotation of hypocycloids around a vertical axis represents the axis of symmetry of the curve. It …

In this paper we present the rotation surface obtained by the rotation by the vertical ax of a
curved line formed of two equals circle arches. The rotation surface presented in the paper …

This paper wants to systematically and generally present the surfaces' intersection, with
special interest for the method of auxiliary surfaces. The intersections types presented are …