Mathematics Crossword Puzzle

3. The reciprocal of the cosine function.
4. The ratio of the opposite side to the hypotenuse in a right-angled triangle.
5. The measure of the space inside a three-dimensional object.
7. The coefficients of the variables in an equation.
9. The first term of an arithmetic progression.
12. The number of square units that cover the surface of a three-dimensional object.
16. A sequence of numbers where the difference of any two successive members is a constant.
19. The sum of the first 'n' terms in an arithmetic progression.
20. The branch of mathematics that deals with the relationships between the angles and sides of triangles.

1. A system with no solution or infinite solutions.
2. The difference between consecutive terms in an arithmetic progression.
6. A polynomial with three terms.
8. The point where two lines intersect.
10. The process of dividing polynomials.
11. The sum of the areas of all surfaces of a three-dimensional object.
13. A polynomial of degree zero.
14. The highest power in a polynomial equation.
15. The measure of space occupied by a three-dimensional object.
17. An expression that represents a mathematical relationship between two variables.
18. The ratio of the adjacent side to the hypotenuse in a right-angled triangle.