Examine the diagram of the cone at right.  

1. How could you slice the cone so that the cross-section is a triangle?

   Hint (a):

   Look at the cone. What part resembles a triangle?

2. What cross-section do you get if you slice the cone horizontally?

   Hint (b):

   Look at the top of the cone. What shape is this?

3. Lois is thinking of a shape. She says that no matter how you slice it, the cross-section will always be a circle. What shape is she thinking of? Draw and describe this shape on your paper.

   Answer (c):

   A sphere. Be sure to draw the shape.