August 1998
<<July August September>>
We have a triangle ABC, with a point D on side AB, E, on side BC, and F on side CA. The smaller triangle, DEF, is equilateral. The line segments AD, BE, and CF all have equal length.
Problem: Prove that ABC is also equilateral.
Comment: Although we have a solution for this problem, it is not a simple one.
We will post the names of those who submit a correct, original solution! If you don't want your name posted then please include such a statement in your submission!
We invite visitors to our website to submit an elegant solution. Send your submission to the ponder@il.ibm.com.
If you have any problems you think we might enjoy, please send them in. All replies should be sent to: ponder@il.ibm.com
Challenge:
08/01/98 @ 9:00 AM EST
Solution:
09/01/98 @ 5:00 PM EST
List Updated:
12/01/01 @ 9:00 AM EST
People who answered correctly:
Attention: If your name is posted here and you wish it removed please send email to the ponder@il.ibm.com.