#
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.