1. Count the number of black dots you see in the following slide.

3. Can conic sections also disappear
Can conic sections also disappear? Use the Conic Section Explorer Tool to see if you can set the parameters for each of the four conic sections so that the conic disappears.

4. Draw a table on your paper and write down the parameters for each conic section: (use your work from prior explorations) Note: The conic may not completely disappear but may turn into something different. a b
Circle
Parabola
Hyperbola
Ellipse