In this video segment, participants discuss some of the
vocabulary of geometry. Watch this segment after you have
completed Problems D1-D3 and compare your thinking with that of
the onscreen participants. What are some of the difficulties the
participants ran into while trying to define a point and a line?
How are your descriptions similar to or different from those of
the onscreen participants? If you are using a VCR, you can find
this segment on the session video approximately 20 minutes and
48 seconds after the Annenberg Media logo.