Xaxon Yellowbearyd was the fiercest Viking warrior of his time. Now a map to his hidden treasure lies in Radius's and Per's hands. Together the cousins must decode the strange numbered grid on the map-and figure out the secret of the Viking's X and Y axes. As bungling bandits pursue them, Radius and Per use coordinate geometry in their quest for treasure of the greatest measure.

 

This book features in the following series: Maths Adventures, Sir Cumference .

There are 32 pages in this book. This is a picture book. A picture book uses pictures and text to tell the story. The number of words varies from zero ('wordless') to around 1k over 32 pages. Picture books are typically aimed at young readers (age 3-6) but can also be aimed at older children (7+). This book was published 2012 by Charlesbridge Publishing, U. S. .