Mathematical Experiment 14


Wrap this grid around a cone.


Wrap this grid around a cone.


Wrap this grid around a cone.


Construct these circles
and their stereographic image


Construct one-half of the tangent cone to a sphere.


Construct three cylinders with any two touching at one point.


Construct four discs with any two touching at one point.


Construct two hyperboloids of one sheet touching each other along a straight line.


Construct one-half of a right solid cylinder whose boundary consists of the helicoid, part of the cylinder and two semi-disks.