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Mathematik-Online problems: Lösungshinweis to

Interactive Problem 112: Length of Seams on a Soccer Ball

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
If we partition the ball as shown in the figure below, the intersecting curve forms a regular decagon (red), and the points $ E$ , $ M$ , and $ O$ form a right triangle (blue).
\includegraphics[width=.5\linewidth]{bild.eps}
[problem]
  automatisch erstellt am 19.  9. 2008