Geometry crossword

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Across
  1. 3. An angle more than 90 degrees but less than 180 degrees
  2. 5. A quadrilateral with no sides parallel
  3. 7. A triangle with all sides a different length
  4. 9. A line lying on the shortest path between any two of its points
  5. 13. A triangle with all sides the same length
  6. 15. Two distinct lines intersecting each other at 90° or a right angle
  7. 16. A shape with all its sides the same length
  8. 19. An angle that is larger than 180 degrees
  9. 20. A line that is a right angle to a horizontal line
Down
  1. 1. A line that is a right angle to a vertical line
  2. 2. An angle that is 90 degree
  3. 4. A triangle with two sides the same length
  4. 6. A common and common vertex
  5. 8. An angle less than 90 degrees
  6. 10. A shape with 4 equal straight lines
  7. 11. a shape with six straight sides and angles
  8. 12. A shape with 3 lines and 3 angles
  9. 14. Lines that are side by side and having the same distance between them continuously
  10. 17. A quadrilateral all of whose sides have the same length
  11. 18. A shape that has 5 straight lines and 5 angles