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**MATHEMATICS (English & Malayalam)**

1. Angle of elevation and angle of depression

2. Concept of an AP & Sum of an AP

3. Congruent and similiar figures

4. Consistancy - in consistancy of a pair of linear equations

5. Construction of similar Polygons

6. Converting a quadratic equation

7. Criteria for similar triangles

8. Determining area of a circle of radius `r' a sector of a circle

9. Determining six trigonometric ratios graphically

10. Determining trigonometric of (1) 45 using a square (2) 30 & 60 using equilateral triangles

11. Determining trigonometric ratios of complementary angles

12. Division of a line segment internally or externally into number

13. Experimental verification of phythagorous therom

14. Factorising a quadralic polynomial

15. Formation of 3D

16. Fundamental theorem of Arithmetic

17. Graphical Meaning of roots of a Quadratic Equation

18. Graphical meaning of zeros of a polynomial

19. Graphical solution of a pair of linear qeuation in two variables

20. No loss of volume of material while covertly one 3D shape to another

21. Only one tangent at a point of a circle

22. Representation of real number in number line

23. Surface area and volume of a combination of solids frustum

24. Tangent to a circle from an external point

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