3. Similarity of Triangles (Подобие треугольников) Introducing the concept of "same shape, different size."
Angle-Angle (AA), Side-Angle-Side (SAS), and Side-Side-Side (SSS).
Circumscribed and inscribed circles of a triangle. 5. Vectors (Векторы) - Optional/Advanced Basics: Definition of a vector, coordinates, and length. geometriia 8 klass
Deep dive into Rectangles, Rhombuses, and Squares.
Adding and subtracting vectors, multiplying a vector by a number. different size." Angle-Angle (AA)
Thales's Theorem and the definition of similar figures.
Properties of isosceles and right trapezoids; the midline of a trapezoid. and length. Deep dive into Rectangles
Central angles vs. Inscribed angles (and the relationship between them).