MATH CROSSWORD

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Across
  1. 1. Able to be represented by a straight line on a graph
  2. 4. a part of a figure cut off by a line or plane intersecting it.
  3. 5. the amount of space that a substance or object occupies
  4. 9. corresponding angles and sides must be equal.
  5. 10. The total area that the surface of the object occupies.
  6. 12. removing one variable by adding equations
  7. 15. the value obtained by dividing the sum of several quantities by their number; an average
  8. 16. either of two angles whose sum is 90°.
  9. 18. either of two angles whose sum is 180°.
  10. 20. the distance from a point to the y -axis, measured parallel to the x -axis.
  11. 22. the value that occurs most frequently in a given set of data.
  12. 24. each of a group of numbers used to indicate the position of a point, line, or plane.
  13. 25. a value or quantity lying at the midpoint of a frequency distribution
  14. 26. a numerical or constant quantity placed before and multiplying the variable in an algebraic expression.
  15. 27. a closed plane figure having three sides and three angles.
Down
  1. 2. an equality relating one mathematical expression A to another mathematical expression B, such that A and B produce the same value for all values of the variables within a certain range of validity.
  2. 3. putting numbers where the letters are
  3. 6. the relations of the sides and angles of triangles and the relevant functions of any angles.
  4. 7. an expression consisting of variables and coefficients.
  5. 8. a formula with 'n' in it which enables you to find any term of a sequence without having to go up from one term to the next.
  6. 11. the portion of a solid that lies between one or two parallel planes cutting it.
  7. 13. an equation containing a single variable of degree 2.
  8. 14. Straight line or plane that touches a curve or curved surface at a point
  9. 17. a flat surface on which a straight line joining any two points on it would wholly lie.
  10. 19. The square of the length of the hypotenuse of a right triangle equals the sum of the squares of the lengths of the other two sides.
  11. 21. the plane figure enclosed by two radii of a circle
  12. 23. the boundary of a closed geometrical figure.
  13. 28. A subsidiary or intermediate theorem in an argument or proof.