Real Numbers

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Across
  1. 1. Largest mammal
  2. 7. Triangle with two equal sides
  3. 9. Largest country in the world
  4. 10. Probability of a certain event
  5. 11. 0.1
  6. 15. half of a circle
  7. 16. Solid with one face
  8. 18. Number multiplied by itself
  9. 19. Result of multiplication
  10. 21. Angle between 90 and 180
Down
  1. 2. <
  2. 3. divisible by two
  3. 4. Here
  4. 5. Distance around a shape
  5. 6. Nothing
  6. 8. >
  7. 12. XXX
  8. 13. In Paris this year
  9. 14. Regular quadrilateral
  10. 17. Bottom heavy fraction
  11. 20. Solid with 6 identical faces