CROSSWORD IN MATHEMATICS

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Across
  1. 1. An expression that can have constants, variables and exponents, but no division by a variable.
  2. 5. An equation where the highest exponent of the variable (usually "x") is a square (2).It is usually written ax2+bx+c = 0.
  3. 9. study of the relationships between the angles and the sides of a right triangle.
  4. 11. set of whole numbers and their opposites.
  5. 12. remain the same distance apart over their entire length. No matter how far you extend them, they will never meet.
  6. 13. Two integers are opposites if they are each the same distance away from zero, but on opposite sides of the number line.
  7. 15. The starting point.On a number line it is 0.
  8. 16. f -1(x) is said to be the inverse of f(x) if f(f -1(x)) = f -1(f(x)) = x. It is obtained by interchanging the variables x and y of the function.
  9. 18. The area of mathematics that deals with points, lines, shapes and space.
  10. 20. Forget everything you know about numbers.
Down
  1. 2. A pair of numbers used to locate a point on a coordinate plane is called an ordered pair.An ordered pair is written in the form (x, y) where x is the x-coordinate and y is the y-coordinate.
  2. 3. The line on a graph that runs horizontally (left-right) through zero.
  3. 4. A triangle that has a right angle (90°).
  4. 6. A 3-sided polygon (a flat shape with straight sides).
  5. 7. An exact location. It has no size, only position.
  6. 8. The longest side of a right triangle. The side opposite the right angle.
  7. 10. An obtuse angle is one which is more than 90° but less than 180°.
  8. 14. The surface a solid object stands on, or the bottom line of a shape such as a triangle or rectangle.
  9. 17. A symbol for a number we don't know yet. It is usually a letter like x or y.
  10. 19. The line on a graph that runs vertically (up-down) through zero.