Geometry

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Across
  1. 1. The point that divides the segment into two congruent segments
  2. 5. A 4-sided polygon
  3. 9. Two angles whose measures have the sum 180
  4. 11. A 5-sided polygon
  5. 14. A chord that contains the center of a circle
  6. 17. A triangle with all sides congruent
  7. 19. A statement that can be proved easily by applying the theorem
Down
  1. 2. A segment joining two non-consecutive vertices of a polygon
  2. 3. A triangle with no sides congruent
  3. 4. A statement that contains the words "if and only if"
  4. 6. A quadrilateral with four right angles and four congruent sides
  5. 7. A statement that is accepted without proof
  6. 8. An 8-sided polygon
  7. 10. A line that intersects two or more coplanar lines in different points
  8. 12. The set of all points
  9. 13. A quadrilateral with both pairs of opposite sides parallel
  10. 15. A triangle with all angles congruent
  11. 16. A line that contains a chord
  12. 18. A statement that can be proved
  13. 19. A segment whose endpoints lie on a circle