Circle vs. Sphere

Circle, Sphere
Interact with the applet below for a few minutes, then answer the questions that follow. Be sure to move the BIG POINTS around during your investigation!
Questions: 1) What do a CIRCLE and SPHERE have in common? Explain. 2) How are a CIRCLE and SPHERE different? Explain. 3) Using what you've observed, write a definition for the term CIRCLE and for the term SPHERE. Hint: Be sure to use the words "locus", "points", and "equidistant" in each definition!