Maths all over the words

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