maths

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Across
  1. 4. between 0 and 90 degrees
  2. 5. -
  3. 10. part of a whole
Down
  1. 1. +
  2. 2. a chart looking like a pie
  3. 3. between 90 and 180 degrees
  4. 6. a chart with bars
  5. 7. 90 degrees angle
  6. 8. whether it is hot or cold
  7. 9. 3X2