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Description
Introduction to Projective GeometryThis lucid introductory text offers both an analytic and an axiomatic approach to plane projective geometry. The analytic treatment builds and expands upon students' familiarity with elementary plane analytic geometry and provides a well motivated approach to projective geometry. Subsequent chapters explore Euclidean and non Euclidean geometry as specializations of the projective plane, revealing the existence of an infinite number of geometries, each
This lucid introductory text offers both an analytic and an axiomatic approach to plane projective geometry. The analytic treatment builds and expands upon students' familiarity with elementary plane analytic geometry and provides a well-motivated approach to projective geometry. Subsequent chapters explore Euclidean and non-Euclidean geometry as specializations of the projective plane, revealing the existence of an infinite number of geometries, each Euclidean in nature but characterized by a different set of distance- and angle-measurement formulas. Outstanding pedagogical features include worked-through examples, introductions and summaries for each topic, and numerous theorems, proofs, and exercises that reinforce each chapter's precepts. Two helpful indexes conclude the text, along with answers to all odd-numbered exercises. In addition to its value to undergraduate students of mathematics, computer science, and secondary mathematics education, this volume provides an excellent reference for computer science professionals.Binding Type: Paperback
Publisher: Dover Publications
Published: 12/09/2008
ISBN: 9780486468952
Pages: 556
Weight: 1.60lbs
Size: 9.10h x 6.10w x 1.20d
Review Citations: Scitech Book News 03/01/2009 pg. 40
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4.6 ★★★★★
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Product Reviews
★★★★★ 5
Great toy for a very active chewer
Color: Green, Pattern Name: Hammerhead Shark, Color: Green, Pattern Name: Hammerhead Shark
My Pomsky who is 9 months has destroyed every toy we’ve gotten him so far and he LOVES this one. He took to it right from the box and hasn’t let it leave his side since. It’s a very durable, hard, chew resistant material and I have a feeling it’s going to last him a long time. Highly recommend! His smile says it all 😊
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Reviewed in the United States on June 9, 2026
★★★★★ 5
Durability
Color: Green, Pattern Name: Hammerhead Shark
I have a lab puppy and she LOVES to chew and tear anything that she can up. I bought this being a little bit hesitant by some of the reviews but I will say she has not torn out the squeaker yet,. And it’s pretty loud too (it’s been almost two weeks) and the plastic is pretty durable. The only negative I have to say is the plastic does it sharp ( I’ve almost cut myself on it) but that doesn’t seem to affect her. So overall I’d say this is a great product if your dog needs something durable yet chewable.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
A Huge Hit in My Bully Breed House!
Color: Green, Pattern Name: Hammerhead Shark
I have a house full of bully breeds, and this hammerhead shark toy is by far one of their favorites.
I’ve actually bought a few of them so there are extras around the house — otherwise they’d all be fighting over the same one! That alone tells you how much they love it. The shape makes it easy for them to grab, chew, and toss around, and the squeaker keeps them interested without being obnoxiously loud.
What really impressed me is the durability. My dogs are serious chewers, and we’ve had these for a while now. They’re still going strong, which is saying a lot in this house. The combination of rubber and nylon seems to hold up really well to heavy chewing.
The bacon scent definitely helps keep their attention, and I like that I can add a little peanut butter for extra enrichment. It keeps them busy and off my furniture — always a win.
If you have strong chewers, especially bully breeds, this one is absolutely worth picking up. Durable, fun, and clearly dog-approved in this house.
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Reviewed in the United States on March 4, 2026
★★★★★ 4
Great for puppies
Color: Green, Pattern Name: Hammerhead Shark
Great for a teething puppy but very loud when it hits the floor. It is truly indestructible!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
Great chew toy!
Color: Green, Pattern Name: Hammerhead Shark
Our dogs love them! I have three of the sharks to help them share with each other! LOL
Been crewed on and still look good, long lasting and perfect size for our Golden and Yellow Lab.
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Reviewed in the United States on May 22, 2026