Polygon Crossword

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Across
  1. 3. What type of angle do perpendicular lines make?
  2. 5. A polygon with 6 sides
  3. 8. Pentagons have how many sides?
  4. 9. How many sides and vertices does an octagon have?
  5. 11. A 5 sided polygon, also the name of a government building
  6. 13. These type of lines cross only one time
  7. 14. How many sides does a nonagon have?
  8. 17. A polygon with 4 sides
  9. 18. A polygon with 3 sides
  10. 19. Quadrilaterals have how many sides?
Down
  1. 1. These type of lines NEVER cross
  2. 2. How many sides does a hexagon have?
  3. 4. A polygon with 7 sides
  4. 6. How many sides does a decagon have?
  5. 7. A polygon with 10 sides
  6. 10. How many sides does a triangle have?
  7. 11. A shape with at least three straight sides that connect
  8. 12. A polygon with 8 sides
  9. 15. A polygon with 9 sides
  10. 16. A point where sides of a polygon connect