Monique's Four Corners:

This space curve was produced using the following Maple commands:

> x:=(1+sin(25*t))*cos(t);
> y:=(1+cos(25*t))*sin(t);
> z:=1+cos(25*t);

                     x := (1 + sin(25 t)) cos(t)


                     y := (1 + cos(25 t)) sin(t)


                          z := 1 + cos(25 t)

> with(plots):
> spacecurve([x,y,z],t=0..2*Pi,numpoints=1000,
>   thickness=2,axes='FRAMED',orientation=[45,10]);