Thompson, Debbie frey50 Geometry success in 20 minutes a day / Debbie Thompson. - 1st ed. - New York : LearningExpress, c2000. - x, 192 p. : ill. ; 28 cm. - LearningExpress skill builders . - . Includes bibliographical references (p. 191-192). ISBN: 1576852776 (pb) LCCN: 00023748 Subjects--Topical Terms: Geometry--Study and teaching. LC Class. No.: QA461 / .T46 2000 Dewey Class. No.: 516