maths :)

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Across
  1. 2. another name for x-coordinate
  2. 9. a number that is being divided
  3. 10. equation whose graph is a straight line
  4. 12. when three or more points lie on a single straight line , they are said to be _____
  5. 13. angle formed outside a polygon by extending one of its sides
  6. 14. a method of writing very large or very small numbers using powers of 10
  7. 15. opposite of a number that when added to the number is zero
  8. 17. the result of dividing two numbers or expressions
  9. 18. the coordinates of this point is (0,0)
Down
  1. 1. a(b+c) = ab + ac is a example of _______
  2. 3. when two numbers have no common factor other than 1, they are called ____
  3. 4. multiplicative inverse of an expression
  4. 5. numbers whose decimal expansion is non terminating-non recurring
  5. 6. when two figures or objects have same shape and size , they are said to be ______
  6. 7. perpendicular distance of a point from x-axis
  7. 8. symbol for an unknown number-usually expressed using a letter
  8. 11. side opposite a right angle- longest side of a triangle
  9. 16. set of whole numbers and heir opposites including zero