Maths all over the words

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Across
  1. 2. a number that is divisible only by itself and 1
  2. 4. a numerical quantity that is not a whole number
  3. 6. the angle in degrees measured clockwise from north
  4. 7. the amount of space in a certain 3D object
  5. 12. two equal sides and one different
  6. 14. part of the line that connects two points
  7. 17. A symbol for a value we don't know yet
  8. 18. a round plane figure whose boundary consists of points equidistant from a fixed point
  9. 19. A point where two or more line segments meet
  10. 21. transformation that changes the size of the figure.
  11. 23. an expression that defines a relationship between two variables
  12. 25. The set of all output values of a function
Down
  1. 1. all the input values shown on the x-axis
  2. 3. ratio of the side adjacent to an acute angle (in a right-angled triangle) to the hypotenuse.
  3. 5. science of collecting and analyzing numerical data in large quantities
  4. 8. equality between two expressions consisting of variables and/or numbers
  5. 9. the region bounded by the shape of an object
  6. 10. 2, 4, 6, 8
  7. 11. measure of the edge of a figure
  8. 13. ratio of the side opposite a given angle (in a right-angled triangle) to the hypotenuse.
  9. 15. a plane figure with six straight sides and angles.
  10. 16. transformation that changes each point of the figure with degrees
  11. 20. if it has equal sides and angles
  12. 22. a region which is formed by two rays or lines that shares a common endpoint
  13. 24. 1, 3, 5, 7, 9