"Mr. Tan loves toys. He loves circles, too! He opened Circle Town Toy Shop. Go shopping for wholes, halves, and fourths in the new toy store"--Provided by publisher.
When Sir Cumference drinks a potion which turns him into a dragon, his son Radius searches for the magic number known as pi which will restore him to his former shape.
"This book is about Circle. This book is also about Circle's friends, Triangle and Square. Also it is about a rule that Circle makes, and how she has to rescue Triangle when he breaks that rule"--Back cover.
"When Circle rolls into one of Triangle's points and pops,chaos momentarily ensues until Octagon's 'Stop!' brings everyone to their senses . . . [This] rhyming text introduces us to a collection of shapes and . . . weaves their physical characteristics into traits that both lead to and solve a would-be catastrophe"--Provided by publisher.