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. show more

Binding: Paperback;32 pages; Publisher: Charlesbridge Publishing,U.S.; Classification: Children?s / Teenage fiction and true stories; Weight: 220 g; Dimensions: 178 x 235 x 3

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