School Mathematics Geometry

I taught geometry at a small private high school for several years and this was our textbook. It's truly brilliant. What I love about it is that it takes the subject of geometry and starts at the beginning with three undefined terms: point, line, and plane. Since you can't define them, it describes them, then moves on to state some assumptions about them. These are called postulates. The undefined terms and the postulates are the building blocks of geometry. From them, you derive the theorems. Then come the proofs. To progress in the subject, you never have to reach beyond the building blocks that have come before. This is a key strength. So many books skip around from topic to topic, and you must accept theorems as fact without much background or understanding as to how they came up with them. But this book builds upon itself, and you can always show the student how a theorem works based upon what you've already covered and proved. It all goes back to the beginning of the book. It's truly awesome. I recommend this book, old as it is, for someone who is quite bright and who wants to learn geometry on their own, say a home-schooling situation. It's too bad the book is now only available in one-at-a-time quantities; it's out of print. But if you're reading this, you have a chance to buy it, so don't pass it up.