Download or read book MATHEMATICS - A TEXTBOOK FOR CLASS IX written by NCERT Editorial Team and published by . This book was released on 2002-01-01 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers the following topics : 1. Irrational Numbers, 2. Polynomials, 3.Ratio and Proportion, 4. Linears equations in Two variables, 5. Percentage and its application, 6. Compound interest, 7. Banking, 8. Lines, angles and triangles, 9. Congruence of Triangles, 10. Inequalities in a triangle, 11. Parallelograms,12. Loci and concurrent Lines in Triangles, 13. Areas, 14. Geometrical constructions, 15. Trigonometry, 16. Mensuration of Plane figures, 17. Mensuration of Solid figures, 18. Statistics