Min Soo's Pyramids:

The Pyramid:

"The Pyramid" was produced using the following Maple commands:

> x:=(1+cos(t))*cos(t)*t;
> y:=(1-cos(t))*sin(t)*t;
> z:=48*Pi-t;

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


                      y := (1 - cos(t)) sin(t) t


                            z := 48 Pi - t

> with(plots):
> spacecurve([x,y,z],t=0..48*Pi,numpoints=1000,
>   axes='NORMAL');

Twisted Pyramid:

"Twisted Pyramid" was produced using the following Maple commands:

> x:=(1+cos(t))*cos(t)*t;
> y:=(1-cos(t))*sin(t)*t;
> z:=(48*Pi-t)*sin(t);

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


                      y := (1 - cos(t)) sin(t) t


                       z := (48 Pi - t) sin(t)

> with(plots):
> spacecurve([x,y,z],t=0..48*Pi,numpoints=1000,
>   axes='NORMAL');