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

The angle measure between your thumb and index finger when your hand is shaped like an "L" is about
90
.

How do the angle measures between your other fingers compare to this angle measure? Is the angle measure larger or smaller? Half as big?

Draw the 90 angle between your thumb and index finger. Sketch an angle with half that measure. Use your sketch to estimate the measures of the other angles.

Ratio Hand

Home  ·  Back to the Challenge иаAnswer иаTry These иаThink About This ·   Did You Know?
Resources иаTry Another Challenge иаChallenge Index иаMath Index
Printing the Challenges · En Español · Family Corner иаTeacher Corner иаAbout Figure This!
Purchase the CD
©2004 National Council of Teachers of Mathematics
Web site and CD-ROM design/production
© 1999-2004 KnowNet Construction, Inc.