Geometry - part 2

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Across
  1. 5. Polygon with all sides and angles congruent
  2. 6. Shape has twelve sides
  3. 8. Shape has nine sides
  4. 10. Distance around a circle
  5. 12. Has at least two congruent sides
  6. 13. Line segment with endpoints on a circle
  7. 15. Shape has five sides
  8. 17. Shape has seven sides
  9. 18. Has one right angle
  10. 20. Has no congruent sides
Down
  1. 1. Shape has six sides
  2. 2. Has three acute angles
  3. 3. Shape has four sides
  4. 4. Shape has three sides
  5. 7. Chord that passes through the center of a circle
  6. 9. Shape has eight sides
  7. 11. Has three congruent sides
  8. 12. Polygon with no congruent sides or angles
  9. 14. Shape has ten sides
  10. 16. Has one obtuse angle
  11. 19. Segment from the center to an endpoint of a circle