Geometriia 8 Klass -

Using similarity to find the heights of objects or distances across rivers. 4. Circles (Окружность) Interactions: Tangent lines and their properties.

Circumscribed and inscribed circles of a triangle. 5. Vectors (Векторы) - Optional/Advanced Basics: Definition of a vector, coordinates, and length.

Thales's Theorem and the definition of similar figures.

Central angles vs. Inscribed angles (and the relationship between them).

3. Similarity of Triangles (Подобие треугольников) Introducing the concept of "same shape, different size."

Deep dive into Rectangles, Rhombuses, and Squares.

Properties of isosceles and right trapezoids; the midline of a trapezoid.