Author(s): Daniel C. Alexander, Geralyn M. KoeberleinDifference between 6th and 5th editions Side by side comparison of table of contents helps to figure out the most significant changes. |

**Key differences between 6th and 5th editions**

- Time lapse between current and previous editions: 4 years (2014 vs 2010).
- Alexander & Koeberlein's
*Elementary Geometry for College Students*was first published in 1992. - The Sixth edition includes about 150 new exercises.
- New material on parabolas.
- Completely new section 10.6 "A Three-Dimensional Coordinate System" discusses points, lines, the midpoint formula, planes, line and plane relationships. The section includes the table on line relationships in Cartesian space.
- New Appendixes:
- A.4 Factoring and Quadratic Equations
- A.5 The Quadratic Formula and Square Root Properties

Elementary Geometry for College Students

Published by: Cengage Learning, January 01, 2014

Published by: Cengage Learning, January 01, 2014

Elementary Geometry for College Students

Published by: Cengage Learning, January 01, 2010

Elementary Geometry For College Students

Published by: Houghton Mifflin Company, January 10, 2006