ALEGERBUHH

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Across
  1. 5. distance between
  2. 6. middle
  3. 7. all numbers share
  4. 8. common
  5. 9. a constant
Down
  1. 1. tri,bi,mono
  2. 2. Greatest power
  3. 3. Variation
  4. 4. numbers,messaurements
  5. 6. avarage