Curve nello spazio

Elica cilindrica: 

[Graphics:Images/curve3d_gr_1.gif]

[Graphics:Images/curve3d_gr_2.gif]

     -Graphics3D-

Elica conica: 

[Graphics:Images/curve3d_gr_3.gif]

[Graphics:Images/curve3d_gr_4.gif]

     -Graphics3D-

Cubica sghemba: 

[Graphics:Images/curve3d_gr_5.gif]

[Graphics:Images/curve3d_gr_6.gif]

     -Graphics3D-

Curva chiusa sghemba: 

[Graphics:Images/curve3d_gr_7.gif]

[Graphics:Images/curve3d_gr_8.gif]

Converted by Mathematica      September 4, 2000