Mathematics

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Across
  1. 3. centre of a circle that inscriibe a triangle
  2. 5. amount of money invested
  3. 7. for any 2 number;HCF×LCM=______of number
  4. 9. formed by 3line segment that interect only at end points
Down
  1. 1. points lie on straight line
  2. 2. triangle with all sides equal
  3. 4. person who invented zero
  4. 6. all sides are equal
  5. 8. the point of intersection of x axis and y axis
  6. 10. another word for total