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Geometry For Dummies [Paperback]

Mark Ryan (Author)
3.2 out of 5 stars  See all reviews (11 customer reviews)

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Book Description

January 3, 2008 0470089466 978-0470089460 2
Learning geometry doesn’t have to hurt. With a little bit of friendly guidance, it can even be fun! Geometry For Dummies, 2nd Edition, helps you make friends with lines, angles, theorems and postulates. It eases you into all the principles and formulas you need to analyze two- and three-dimensional shapes, and it gives you the skills and strategies you need to write geometry proofs.

Before you know it, you’ll be devouring proofs with relish. You’ll find out how a proof’s chain of logic works and discover some basic secrets for getting past rough spots. Soon, you’ll be proving triangles congruent, calculating circumferences, using formulas, and serving up pi. The non-proof parts of the book contain helpful formulas and tips that you can use anytime you need to shape up your knowledge of shapes. You’ll even get a feel for why geometry continues to draw people to careers in art, engineering, carpentry, robotics, physics, and computer animation, among others.You’ll discover how to:

  • Identify lines, angles, and planes
  • Measure segments and angles
  • Calculate the area of a triangle
  • Use tips and strategies to make proofs easier
  • Figure the volume and surface area of a pyramid
  • Bisect angles and construct perpendicular lines
  • Work with 3-D shapes
  • Work with figures in the x-y coordinate system

So quit scratching your head. Geometry For Dummies, 2nd Edition, gets you un-stumped in a hurry.


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Editorial Reviews

From the Back Cover

Get un-stumped in a hurry! Proofs made easier

Make friends with lines and angles, theorems and postulates — and prove it

The proof is in the pudding — and the parallelogram, and sometimes the rhombus. With this friendly guide, you'll soon be devouring proofs with relish. You'll find out how a proof's chain of logic works and discover some basic secrets for getting past rough spots. Before you know it, you'll be proving triangles congruent, calculating circumference, using formulas, and serving up pi.

Discover how to:

  • Identify lines, angles, and planes

  • Calculate the area of a triangle

  • Figure the volume and surface area of a pyramid

  • Bisect angles and construct perpendicular lines

  • Work with 3D shapes

About the Author

A graduate of Brown University and the University of Wisconsin Law School, Mark Ryan has been teaching math since 1989. He runs The Math Center (www.themathcenter.com) in Winnetka, Illinois, where he teaches high school math courses, including an introduction to geometry and a workshop for parents based on a program he developed, The 10 Habits of Highly Successful Math Students. In high school, he twice scored a perfect 800 on the math portion of the SAT, and he not only knows mathematics, he has a gift for explaining it in plain English. He practiced law for four years before deciding he should do something he enjoys and use his natural talent for mathematics. Ryan is a member of the Authors Guild and the National Council of Teachers of Mathematics.
Geometry For Dummies, 2nd Edition, is Ryan’s fifth book. Everyday Math for Everyday Life (Grand Central Publishing) was published in 2002; Calculus For Dummies (Wiley), in 2003; Calculus Workbook For Dummies (Wiley), in 2005; and Geometry Workbook For Dummies (Wiley), in 2006. His math books have sold over 200,000 copies.

Product Details

  • Paperback: 408 pages
  • Publisher: For Dummies; 2 edition (January 3, 2008)
  • Language: English
  • ISBN-10: 0470089466
  • ISBN-13: 978-0470089460
  • Product Dimensions: 7.4 x 0.9 x 9.2 inches
  • Shipping Weight: 1.4 pounds (View shipping rates and policies)
  • Average Customer Review: 3.2 out of 5 stars  See all reviews (11 customer reviews)
  • Amazon Best Sellers Rank: #24,987 in Books (See Top 100 in Books)

More About the Author

A graduate of Brown University and the University of Wisconsin Law
School, Mark Ryan has been teaching math for over 12 years. He runs
the Math Center in Winnetka, Illinois, where he teaches high school
math courses and a workshop for parents based on his book, The 10
Habits of Highly Successful Math Students. In high school, he twice
scored a perfect 800 on the math portion of the SAT, and he not only
knows mathematics, he has a gift for explaining it in plain
English. You'll enjoy his down-to-earth style, his humor, and his many
useful math tips and shortcuts that will enable you to DO THE MATH. A
tournament backgammon player and an avid skier and tennis player, he
lives in Chicago.

 

Customer Reviews

11 Reviews
5 star:
 (4)
4 star:
 (1)
3 star:
 (2)
2 star:
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1 star:
 (3)
 
 
 
 
 
Average Customer Review
3.2 out of 5 stars (11 customer reviews)
 
 
 
 
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Most Helpful Customer Reviews

19 of 20 people found the following review helpful:
5.0 out of 5 stars A Fine Reference for the Ideas of Geometry and the Logic of Proofs, November 24, 2008
This review is from: Geometry For Dummies (Paperback)
Mark Ryan's book is a fine reference for the ideas of geometry and the logic of proofs. Ryan deals with geometry in an easy way and doesn't ignore the harder parts but explains them very well. I thought the book was very complete and I especially liked the way he introduced transformations.

For high school students the good book is Tutor in a Book's Geometry, but for adults who have a genuine interest in learning about the basic ideas of geometry I highly recommend Mark Ryan's Geometry for Dummies.
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16 of 17 people found the following review helpful:
2.0 out of 5 stars Good overview but it doesn't give you any problems to work., September 28, 2009
By 
C. Martin (Pensacola, FL) - See all my reviews
This review is from: Geometry For Dummies (Paperback)
This is a good overview of basic geometric concepts. It even shows some proofs worked out. The problem is that it doesn't give the reader any problems to work out on their own. You can't learn math by passively reading a book. You have to work problems.

The author has another book called "Geometry Workbook For Dummies". That book provides several exercises for the reader in each chapter. The reader will get practice in both writing proofs and solving geometry problems using algebra.

In addition to the practice it provides, "Geometry Workbook For Dummies" has almost identical text to "Geometry for Dummies".

So in the end there is no need to buy "Geometry for Dummies". Save yourself the money and just buy "Geometry Workbook For Dummies". You'll get nearly the same text with problems to work out also.

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12 of 15 people found the following review helpful:
1.0 out of 5 stars Doesn't Address the Problem Students Face, January 18, 2009
This review is from: Geometry For Dummies (Paperback)
This is a solid well written book that does a good job explaining the ideas of introductory geometry. But that's not the problem facing my students, which is organization of concepts and developing a structure on which to hang that knowledge. I have parents buy this book thinking it makes geometry easier which it doesn't. I also don't think some of the topics are laid out very well. A fact is presented on one page then you have to turn the page for the sketch. I've seen the tutor book the other teacher/reviewer mentioned and that book is much more visual and effectively gives students learning and memory tools. Mr. Ryan's book is definitely one of the good "Dummies" books in that the author knows his subject and is a good writer. But for the high school kids I teach, understanding's not the problem.
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Inside This Book (learn more)
Key Phrases - Statistically Improbable Phrases (SIPs): (learn more)
reflexive property, polygon formulas, transitive property, particular quadrilateral, two other congruent angles, equidistance theorem, two other congruent segments, first reflecting line, two congruent segments, subtraction theorems, angle subtraction, congruent vertical angles, two congruent angles, congruent right angles, open your compass, proving triangles congruent, look congruent, triangle area formula, reflecting lines, midpoint divides, congruent sides, measuring segments, triangle proofs, dicular bisector, alternate exterior angles
Key Phrases - Capitalized Phrases (CAPs): (learn more)
Pythagorean Theorem, Statements Reasons, Getting Started, Polygons of the Four-or-More Sided Variety, Going Deep, Geometry Basics, Completing Congruent Triangle Proofs, Polygons of the Three-Sided Variety, Changing the Scene, Coordinate Geometry, Midline Theorem, Different Size, Proving That You've Got, Grasping Triangle Fundamentals, Regarding Right Triangles, Alternative Geometry Topics, Side-Splitter Theorem, Building Your Geometric Foundation, Introducing Proofs, The Ultimate Guide, Fab Four, Circle Basics, Wave By Rich Tennant, Solid Geometry, Geometric Transformations
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Front Cover | Table of Contents | First Pages | Index | Back Cover | Surprise Me!
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