Neuschwander, Cindy. <br/><br/>
Sir Cumference and the sword in the cone :  a math adventure / 
 Sword in the cone 
by Cindy Neuschwander ; illustrated by Wayne Geehan. 
 - Watertown, MA :  Charlesbridge,  2003. 
 - 32 p. :  col. ill ;  25 cm. 
<br/><br/> Horn Book.  School Library Journal.  Science Books & Films (A.A.A.S.). 
<br/><br/> Sir Cumference, Radius, and Sir Vertex search for Edgecalibur, the sword that King Arthur has hidden in a geometric solid. 
<br/><br/> 5.8  Follett Library Resources.  3-6 
<br/><br/><label>ISBN: </label>9781570916014 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Juvenile literature.<br/>Geometry.<br/>Mathematical recreations.<br/>Geometry.<br/>Mathematical recreations.
<br/><br/><label>Dewey Class. No.: </label>516 NEU/O