Maths cross-word puzzle for class viii

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Across
  1. 6. An angle of value 〖90〗^0
  2. 7. A line segment connecting two opposite vertices in a polygon
  3. 8. An expression with an equating value
  4. 11. A polygon of five line segments
  5. 12. Two rays with same initial point.
  6. 13. An angle of value 〖180〗^0
  7. 15. A regular triangle
  8. 16. We can form a number with it
  9. 17. it is a type of polygon
  10. 22. An expression having one term
  11. 23. In an equation if we change either side of a positive number it will be.
  12. 25. is whole number but not natural number
Down
  1. 1. A closed figure constructed by Line segments
  2. 2. An intersection point of two sides of a polygon.
  3. 3. Number never changes its value
  4. 4. An expression having more than two terms
  5. 5. A polygon in which some of all angles is 〖180〗^0
  6. 9. A polygon of four line segments
  7. 10. Sum of two positive numbers.
  8. 14. Number that changes its value as per condition
  9. 18. Greatest one digit natural number
  10. 19. A regular quadrilateral
  11. 20. An angle of value 〖360〗^0
  12. 21. An expression having two terms
  13. 24. An angle less than 〖90〗^0