: Basic axioms and theorems regarding points, lines, and planes in space.
: Perpendicular lines and planes; theorems on three perpendiculars; distances and angles in space. smirnova geometriia uchebnik - klass gdz
: Introduction to prisms, pyramids, and their basic properties. : Basic axioms and theorems regarding points, lines,
This stage focuses on properties of figures in three-dimensional space. The content is typically divided as follows: theorems on three perpendiculars