Join Sir Cumference, Lady Di of Ameter, and their son Radius for wordplay, puns, and problem solving in this angle-packed math adventure. In the third installment of the beloved Sir Cumference series, Radius must prove himself on his quest for knighthood by rescuing a king. Sent off with the family medallion for luck, Radius dodges dangers and dragons. The ultimate challenge lies in a mysterious castle with a maze of many angles.
| ISBN: | 9781570911699 |
| Publication date: | 1st November 2010 |
| Author: | Cindy Neuschwander |
| Illustrator: | Wayne Geehan |
| Publisher: | Charlesbridge |
| Format: | Paperback |
| Pagination: | 32 pages |
| Series: | Sir Cumference |