Copyright © 1997 by Theoni Pappas. All rights reserved. No part of this work may be reproduced or copied in any form or by any means without written permission from Wide World Publishing/Tetra. Wide World Publishing/Tetra P.O. Box 476 San Carlos, CA 94070 Printed in the United States of America. 9th Printing September 2009 1st e-book format edition 2010 ISBN 13-978-1884550-14-0 Library of Congress Cataloging-in-Publication Data Pappas, Theoni The adventures of Penrose : The mathematical cat / by Theoni Pappas . p. cm. Summary : Penrose the cat explores and experiences a variety of mathematical concepts, including infinity, the golden rectangle, and impossible figures. ISBN 1- 884550-14-2 ( alk. paper) 1. Mathematics -- Study and teaching (Elementary) [1 . Mathematics.] I . Title . QA135.5.P332 1997 510--dc21 97-41182 CIP AC i4v
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