All geometry of grade 9 in a brief presentation. Memo. Gorina D.A.

The author’s method of D.A. Gorina is taken as the basis for this reference manual. It is set out in the form of a book-book. All educational material in the geometry of the 9th grade is represented as in the palm of your hand, and it can be covered with a single look. Method Gorina D.A. It allows you to easily master knowledge in geometry and firmly strengthen them in memory. Drawings, graphs and color design of the material facilitate training. The effectiveness of this method has been tested in practice for years. The manual is intended for students, teachers, parents.