I finished my test and now I'm bored

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Across
  1. 5. a not fun virus to get
  2. 7. what that test was about
  3. 9. that footy team that keeps losing
  4. 11. a type of angle on parallel lines
Down
  1. 1. an old school calculator
  2. 2. a little two written above the line
  3. 3. best house at CGS
  4. 4. shape with interior angles adding to 540 degrees
  5. 6. a decimal times 100
  6. 8. what I get when I divide x by x
  7. 10. what "cos" is short for