Math crossword puzzle

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Across
  1. 1. is defined as the vertical number line in a Cartesian Coordinate System.
  2. 3. is a symbol (usually a letter) that represents a value.
  3. 7. are the counting numbers from zero to infinity.
  4. 9. is the number raised to the power which represents the number of units of a number system.
  5. 11. least positive integer number that is a multiple of two or more numbers
  6. 13. a flat figure with four sides, which can be either convex or concave.
  7. 16. any angle less than 90° is called
  8. 18. the total space inside the boundary of any object is called as
  9. 22. an angle which is more than 90° and less than 180° is known as
  10. 23. a polygon with three sides and three angles.
  11. 24. a polygon with five sides is known as
Down
  1. 2. is defined as the horizontal number line in a Cartesian Coordinate System.
  2. 4. is a positive value of any number.
  3. 5. is a quadrilateral with four congruent sides and four congruent angles (90°).
  4. 6. is the average of the numbers.
  5. 8. a quadrilateral in which opposite sides are parallel, equal in length, and also opposite angles equal.
  6. 10. is that the thing is without any defective in that during making of that thing.
  7. 12. is a pictorial representation of any statistics which is used to compare data
  8. 14. if a number is similar to the positive exponent's reciprocal then it is known as the
  9. 15. it is the total number of substance present in an object.
  10. 17. a straight line whose both the ends touch the circumference of circle.
  11. 19. the power of the base is called an
  12. 20. a 4-sided polygon where all interior angles are 90°.
  13. 21. a set of points in a plane in which the distance of a point from the center is same as the distance of the other points from the center.
  14. 22. is a number which having same value but different sign.