(1) I bought the geometry book from Art of Problem Solving and used for my son last year. This book is a good introduction book (problems are easier than the problems in the book I mentioned below). My opinoin is that this book is better than a lot of textbook. My opinion is that it is enough for classroom use and just good for AMC10 (not for AMC 12/AIME.
(2) I used this problem book and think it is quite good (problems are hard):
Challenging Problems in Geometry [Paperback] Alfred S. Posamentier.
I can email you a pdf file. If you prefer a hard copy, you can buy from online book store.
Hope this will help |
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