General knowledge

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Across
  1. 4. this shape has 8 sides
  2. 7. number of faces of a dodecahedron
  3. 11. what is the largest country in the world by land area?
  4. 12. cruel act
  5. 13. animal hair
  6. 14. show
  7. 15. prepare for publication
Down
  1. 1. shout of disapproval
  2. 2. collective noun for flamingos
  3. 3. what is the centre of our solar system?
  4. 5. salad vegetable
  5. 6. bar snack to make customers thirsty
  6. 8. What is a word, phrase, number, or other sequence of characters that reads the same backward as forward?
  7. 9. first name of man who tried to blow up parliament
  8. 10. justify
  9. 16. after that