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Across 3. Graph of a linear polynomial 4. Point of intersection of the medians 5. Reciprocal of tan of angle 7. The highest value of sin of an angle 8. Triangles that are equiangular 10. Biggest in number sets 11. Value of the variable satisfying the polynomial 14. numbers that are not rational 15. Abbreviation of cosecant 16. Ending decimals 18. Graph of a quadratic polynomial 19. The longest side of a right angled triangle

Down 1. The sides in similar triangles are 2. Equations represented by parallel lines 4. Triangles equal in all respect 6. Inventor of Pythagoras theorem 9. Solving linear equations together 12. Point of intersection of all angle bisectors 13. Line passing through the centre of a circle 17. The zero of a quadratic polynomial