Geometry essentials for dummies / Mark Ryan. Ryan, Mark, 1955- Geometry. QA459 .R888 2011 516 22 RYG Includes index. A practical guide to the critical concepts taught in a typical geometry course. Provides the basics you need to score high in geometry, or for parents helping kids study for exams. Hoboken, NJ : Wiley Pub., c2011. c2011. 2011 Text xii, 180 p. : eng --For dummies --For dummies.