Angles and Polygons

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Across
  1. 1. Angle between 90 degrees and 180 degrees
  2. 6. Triangle with all angles equal
  3. 8. Triangle with 2 equal sides
  4. 9. polygon with least number of sides
Down
  1. 2. polygon with 4 equal sides
  2. 3. 2D shape with 4 sides
  3. 4. Angle measuring 90 degrees
  4. 5. Triangle with all sides of different length
  5. 7. Angle less than 90degrees