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Previous optical Illusion of the Month (July - August 2008)

by Gianni A. Sarcone and Marie-Jo Waeber


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'What's wrong with this picture' challenge

Geometrical baffle
Consider the segments BC, BE and CD that form the triangle ABC shown below... Then, try to answer which one(s) of the following equalities is (are) correct?
1. CD = BE ?
2. CD = BC ?
3. BE = BC ?
find the yellow and blue ball
find the yellow and blue ball
Author: G. Sarcone, source Avianca Journal


Segment BE appears longer, though ALL segments are the SAME length! (CD = BE = BC)

Dana Sloat answered:
all of them or none of them...

You're encouraged to expand and/or improve this article. Send your comments, feedback or suggestions to Gianni A. Sarcone. Thanks!

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