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Technology Information:

Geometry GMAT Strategy Guide, 4th Edition (Manhattan GMAT Preparation Guides)

Description

The Geometry Guide illustrates every geometric principle, formula, and problem type tested on the GMAT. Understand and master the intricacies of shapes, planes, lines, angles, and objects.Each chapter builds comprehensive content understanding by providing rules, strategies and in-depth examples of how the GMAT tests a given topic and how you can respond accurately and quickly. The Guide contains a total of 83 'In-Action' problems of increasing difficulty with detailed answer explanations. The content of the book is aligned to the latest Official Guides from GMAC (12th edition).

Special Features:

Purchase of this book includes one year of access to Manhattan GMAT's online Geometry Question Bank (accessible by inputting a unique code in the back of each book).

Reviews

Rating: 4 / 5
Date: 2010-07-29
Summary: "A solid review of GMAT geometry"

I self studied and scored a 770 on the GMAT. Here are my thoughts on the Manhattan GMAT Geometry guide:

===== OVERVIEW =====

The fifth and final guide in the series of quant guides from Manhattan GMAT deals with the subtleties of geometry. This is another important topic tested on the GMAT, since you'll undoubtedly see quite a few problems on triangles (at least two, I think) and the occasional problem on other shapes (particularly circles, squares and solids made up of these two). The guide is pretty exhaustive with regards to the theory you'll need on test day, but it could have been improved by the addition of some more problems in the circles department and a chapter on overlapping shapes.

The first part of the book concerns polygons, triangles, circles, angles, the coordinate plane and solids, featuring 75 "in action" problems (similar to Problem Solving, but with no answer choices). The second part is fairly small and only has 8 questions. In my opinion, this latter section would have benefited greatly from a few tips and practice items on overlapping shapes, since these tend to be the more difficult of the geometry subset (I actually had to guess on one such problem on my real test).

===== PROS =====

*Pretty much all of the theory you'll need on geometry is explained in this book. Their tips on the maximization of the surface area of polygons were particularly interesting, since I have not seen this discussed in any other strategy book on the market

*Comes with access to 25 online questions and 6 adaptive tests (some of the best in the industry). You'll also find the well-known The Official Guide for GMAT Review, 12th Edition problems list to help you practice with real, retired questions

*The problems they supply in this book do tend to test more than one concept at a time, which is a plus. Their explanations are also pretty detailed

===== CONS =====

*No chapter on overlapping shapes! I find these problems to be some of the more challenging in geometry. Also, no Data Sufficiency practice problems is definitely a minus, since these questions tend to be extremely confusing for most students (they combine this relatively puzzling question type with geometry that you sometimes have to draw on your own)

*More problems on the trapezoid, polygons with more than 4 sides and angles within circles would have been nice. I also couldn't find a review of tangents to circles

*The issues mentioned above also impact the overall difficulty of the problems in this book. If the topics would have been included, the book would also contain more advanced problems than it does right now (only a few, sadly)

===== BOTTOM LINE =====

The Manhattan GMAT Geometry guide earns four stars out of five for its coverage of the concepts you'll need to know to do good on GMAT geometry. Overall, this book still needs a bit of work, but its contents currently contain what most student will need for their test. The elements that are missing are almost all advanced topics, of which you won't see more than one or two problems in the GMAT.

About me: Dana Jinaru, 770 GMAT scorer, expert at Beat The GMAT - a community serving 1.5 million+ MBA applicants each year

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Rating: 5 / 5
Date: 2010-04-13
Summary: "Manhattan GMAT is the best prep available!!!"

I didn't take a class, but I have alot of friends who have and have used the Kaplan book and practice tests in addition to the Manhattan. Manhattan prep material and tests are head and shoulders above Kaplan. My only wish is that I had started with the Manhattan series and not even worried about Kaplan. Kaplan may have the brand name, but the fact that Manhattan focuses only on the GMAT shines through. The material goes wayyy more in depth, and it really leverages the other best source of practice material you have, the Official Guide (it has a great feature called rephrasing that references the OG problems directly to give data sufficiency help. It almost makes so much sense that it seems obvious but ingenious at the same time. Why not use the actual old test problems provided by the GMAC as much as you can?).

I wasn't going to buy the whole series but was so impressed by the first book I used (Sentence Correction), that I bought a couple of the quantitative prep books. I was so impressed by those, that I ended up buying all the rest of them. I can not stress enough how much more focused and useful this material is than Kaplan. When used in conjunction with the Official Guide, you have everything you need to break 700.

The things these books provide make so much sense as the best way to prepare, that it makes you wonder why everyone else doesn't do it. My guess is that Manhattan benefits from a focused business model of limiting itself to the GMAT. If you're not looking to score that well and only need to practice some and get used to the questions, the Official Guide is enough. But the Manhattan series is also nice in that it allows you to pick and choose the certain topics you need extra help with. Also, by only buying one book, you get access to six practice tests that are very difficult and provide invaluable information in its readouts of your performance (much more detailed and useful than Kaplan's. Hate to keep hating on Kaplan, but it's the only thing I have to compare to. It's not horrible really, it just pales in comparison to Manhattan. I think of the Kaplan material like I think of McDonald's, very well-known but pretty junky. It'll fill you up, but you won't feel great afterward...)

I've never taken the time to review any items on Amazon.com before, but I have been so impressed with this product that I felt compelled to let others know about it.

Don't waste your money on a class, get the Manhattan series instead. You'll save over a thousand dollars and be better prepared as well!

Good luck!

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Rating: 3 / 5
Date: 2010-01-13
Summary: "Solid Geometry book but why so few illustrations and no gmat-style questions?"

I love most of the MGMAT books but this one just does not feel right. The book is realistically 95 pages and covers all important concepts: from lines to coordinate geometry. Does not go over the top and gives enough material, seems like the writers covered all the bases. However, I have an issue with it - it is not laid out very well. I am a visual learner and felt it would have been a better book if it was spread out more, included more illustrations, and did not have so much verbiage everywhere. Even larger all-in-one books dedicate close to 100 pages for Geometry.

Another issue is that all of the problems in the book are in a non-gmat format (meaning you only get a question, not the 5 answer choices). That is OK for some sections, but not having a single gmat-like question in the entire book is a "no-no". GMAT is heavily about basics and good framework, but there are other ways to solve questions such as backsolving, picking numbers, etc and those skills are honed only when questions are in the GMAT format. Important to point out that the book comes with access to the Geometry quiz bank online, which does have GMAT-style questions, so there is hope.

The big redeeming factors are 6 online tests that are included with every MGMAT book ($39 value), additional online practice materials, and coverage of Coordinate Geometry (a harder topic often omitted in larger textbooks).

***Bottom line: this is a solid geometry book that was crammed in 95 pages but is still a worthy buy for the sake of tests and the coordinate geometry section.

Questions about the book? Post them here - i will respond.
BB, Founder of GMAT Club Community.


P.S. The only other books that cover Coordinate Geometry are: Kaplan GMAT Math Foundations and MGMAT Foundations of GMAT Math, both of which are on the easier side of things but recommended if you need help with math. You can find my reviews for both of them.