Numbers

1234567891011
Across
  1. 2. Sides of a standard die
  2. 5. The loneliest number
  3. 7. Upside down six
  4. 8. The number of wheels on a tricycle
  5. 9. Two vertical parallel lines
  6. 11. Takes this many to tango
Down
  1. 1. Days in a workweek
  2. 3. Sides of a square
  3. 4. Lowest double digit number
  4. 6. Lucky
  5. 8. Biggest number on an analog clock
  6. 10. Looks like an infinity sign