coni e cilindri

> implicitplot3d(x^2+y^2-z^2=0,x=-1..1,y=-1..1,z=-1..1,grid=[20,20,20], orientation=[60,60]);

cono

> plot3d({[z*cos(t),z*sin(t),z]},z=-2..2,t=-Pi..Pi,orientation=[60,60],grid=[50,50]);

cono (parametrico)

> implicitplot3d(x^2+y^2=1,x=-2..2,y=-2..2,z=-2..2,grid=[20,20,20]);

cilindro ellittico

> implicitplot3d(x^2-y^2=1,x=-2..2,y=-2..2,z=-2..2,grid=[20,20,20]);

cilindro iperbolico

> implicitplot3d(x^2-z=0,x=-2..2,y=-2..2,z=-2..2,grid=[20,20,20]);

cilindro parabolico