Neuschwander, Cindy.

Sir Cumference and the Viking's map : a math adventure / Cindy Neuschwander ; illustrated by Wayne Geehan. - Watertown, MA : Charlesbridge, c2012. - 32 p. : col. ill., col. map ; 24 cm.

As bungling bandits pursue them, cousins Radius and Per use coordinate geometry in their quest for treasure as they decode the map of the Viking warrior Xaxon Yellowbearyd.

ISBN: 9781570917929 (softcover) 1570917922 (softcover)

LCCN: 2011000865

Subjects--Topical Terms:
Coordinates.
Geometry, Analytic.