Maths

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Across
  1. 2. arrangement of information in rows and columns
  2. 4. result of multiplication
  3. 6. widthXlegthXheight
  4. 8. half a sphere
  5. 11. number close to the exact number
  6. 13. ratio of the circumference of a circle to its diameter
  7. 14. equal to 1000 billions
  8. 16. a letter or symbol that stands for a number or quantity
  9. 18. 6 sided figure
  10. 19. 36 inches
Down
  1. 1. shape that occupies space and has volume
  2. 3. line segment that shows the figures height
  3. 5. number being divided
  4. 7. meeting at right angles
  5. 9. series of marks at regular intervals along a line
  6. 10. how heavy an object is
  7. 12. plane shape with three sides and three angles
  8. 14. line perpendicular o the radius of a circle
  9. 15. length
  10. 17. a closed plane figure formed by line segments