Maths spellings

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Across
  1. 1. Reverse of expanding brackets
  2. 3. sides the same
  3. 6. in the number row
  4. 8. tracks
  5. 9. Angle between 0 and 90 degrees
  6. 10. bottom
  7. 11. , Making numbers bigger
  8. 12. Adding multiplying etc
Down
  1. 2. row
  2. 4. Seen in shiny things
  3. 5. perimeter
  4. 7. no equal sides