geometry

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Across
  1. 3. - 3d square
  2. 6. - a quadrilateral that has 2 sets of parallel lines that are congruent without 90 degree angle
  3. 8. - touches the circle but is outside
  4. 9. - adds up to 180 degrees
  5. 11. - a line that cuts 2 parallel lines
  6. 13. - shape that has 3 lines
  7. 15. - angle less than 90
  8. 17. - 3d triangle
  9. 18. - opposite and never collide
  10. 19. -the line in the middle of a circle
  11. 20. - 2 sides are congruent (traingle)
Down
  1. 1. - shape that has no angles and no lines
  2. 2. - middle of a circle
  3. 4. - angle more than 90
  4. 5. - quadrilateral with 5 sides
  5. 7. - add up to 90 degrees
  6. 10. - the space where 2 lines meet
  7. 12. - outer part of the circle
  8. 14. - quadrilateral with 6 sides
  9. 16. - the middle of the circle to the edge