A random crossword puzzle

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Across
  1. 2. a subject in school
  2. 7. a shape with no sides and verticies
  3. 8. a place where you live in
  4. 9. the capital of the country is Sydney
  5. 11. full of questions in a piece of paper
  6. 12. A website where you watch videos
  7. 15. a body of water
  8. 16. a thing you sleep on
  9. 18. a person with subscribers
Down
  1. 1. A place full of machines
  2. 3. you can write and draw on it
  3. 4. A popular game
  4. 5. it is on the internet
  5. 6. the places 1st 2nd and 3rd are located there
  6. 10. a delicous treat
  7. 13. a natural disaster
  8. 14. one of the important things
  9. 17. a place that is red and has plants and animals