Eddie Woo's crossword

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Across
  1. 3. we can eat this but it is also a maths term
  2. 5. a math term that comes from the latin word small stone
  3. 7. the length outside a 2d shape
  4. 8. when two angles meet at a 90 degree angle
  5. 9. a person who moves from another country in search for a better life
  6. 10. our world is a sense of ______
Down
  1. 1. My mum and one of my students got diagnosed with a type of this disease
  2. 2. the perimeter of a circle
  3. 4. I teach this subject
  4. 6. the length through the middle of a circle