Home Back to the Challenge Answer Try These Think About This... ResourcesTry Another Challenge  
Answer
Figure This!

Start by standing about 2 feet from a wall. Have a friend hold a small mirror against the wall so that you can see only a portion of yourself; back up and see if you can see more of yourself.

Measure the height of the mirror.

Measure how much of yourself you see in this mirror (the uppermost part to the lowermost part you see).

Compare the measurements. Try other mirrors.

Stand in different places. Draw a picture. Put the measurements in your picture. What do you notice?

Home  ·  Back to the Challenge · Answer · Try These · Think About This ·   Did You Know?
Resources · Try Another Challenge · Challenge Index · Math Index
Printing the Challenges · En Español · Family Corner · Teacher Corner · About Figure This!
Purchase the CD
©2004 National Council of Teachers of Mathematics
Web site and CD-ROM design/production
© 1999-2004 KnowNet Construction, Inc.