the amazing the super the duluxe the words i find difficult jamie crossword

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Across
  1. 3. angle less than 90 degrees
  2. 4. a side with seven sides
  3. 5. the vertical horizontal lines on a grath
Down
  1. 1. the answer
  2. 2. a side with seven shapes
  3. 3. section of a curve part of a circle