EXCITING MATHS PUZZLE

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Across
  1. 4. LINE PASSING THROUGH CENTRE OF A CIRCLE
  2. 6. 0,1,2,3,4
  3. 7. SELLING PRICE-COST PRICE
  4. 8. PAISE IN ONE RUPEE
  5. 9. ONE PART OF A FRACTION
  6. 10. FIRST GREAT MATHEMATICIAN AND ASTRONOMER
  7. 13. 2(LENGTH+BREADTH)
  8. 16. A BRANCH OF MATHEMATICS
  9. 17. UNIT OF TEMPERATURE
  10. 18. UNIT OF MASS
Down
  1. 1. 3+4*4
  2. 2. 4 SIDED POLYGON
  3. 3. SIDE*SIDE
  4. 5. >180 BUT<360
  5. 7. MULTIPLICATION
  6. 11. 2008, 2012,2016
  7. 12. EXTENDS INFINITELY
  8. 14. MAKES THE NUMBER BIGGER OR SMALLER
  9. 15. MATHS PUZZLE GAME