Math

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Across
  1. 1. made by two rays
  2. 3. object in rows and columns
  3. 6. part of a circle
  4. 7. acute angles
  5. 8. square unit to cover surface
Down
  1. 1. figure to represent area
  2. 2. combining groups
  3. 4. Less than 90%
  4. 5. added number
  5. 7. step by step method