This is a geometry study and practice book for the middle and upper grades (about 7-10th grade). It contains detailed explanations about geometry. In addition, there’s a list of geometric terms and their definitions at the beginning. This is a great book for introducing geometry. Answer key is included. The condition of the book is very good – there are no marks, creases, or tears on any of the pages. There is a small crease on the back cover, and some slight wear at the edges. Other than that, the book is in great shape.