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Russia 9 класс Geometry (basic)

अध्याय: 6

1. Solving triangles

Trigonometry for 0°–180° · Laws of cosines and sines

2. Similarity transformation

Similarity and circle theorems

3. Vectors

Vectors

4. Coordinate method

Coordinates

5. Regular polygons and circle measure

Circle measure

6. Motions of the plane

Plane motions