Geometry Crossword

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Across
  1. 1. a 1 dimensional shape with a starting point, but no ending
  2. 8. the center point of a line
  3. 9. the size of a 2 dimensional shape
  4. 11. angle less than 90 degrees
  5. 14. a statement that needs to be proven
  6. 15. a 9-sided polygon
  7. 17. a 10-sided polygon
  8. 18. a statement that is taken to be true
  9. 19. when two lines intersect at a single point
  10. 20. a quadrilateral with one pair of paralell sides
  11. 21. the opposite of a theorum
Down
  1. 2. the figure formed when two lines meet
  2. 3. an 8-sided polygon
  3. 4. a 12-sided polygon
  4. 5. triangle with no equal sides
  5. 6. a 2 dimensional infinite shape
  6. 7. a quadrilateral wehere every angle is 90*, and all the sides are equal
  7. 10. perpendicular line from a vertex to the opposite side
  8. 12. a line that crosses at least two other lines
  9. 13. a quadrilateral with two pairs of paralell sides
  10. 16. a line from the center of a shape to any side at a 90* angle
  11. 19. a 1 dimensional infinite shape