Pierre Dandelin 1794-1847

The VNR Concise Encyclopedia of Mathematics

has three dimensional drawings of each type of conic.

Copy one of the drawings to 11" by 17" paper making it as large as you can.

Color the Dandelin sphere(s), cone, planes, and conic.

Tell your class how the conic is related to the Dandelin Sphere(s).

Copyright © 1999
with all rights reserved by
William V. Thayer, PedLog