chapter 6-7 crossword puzzle

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Across
  1. 2. Having all sides equal
  2. 4. a quadrilateral with at least one pair of parallel sides
  3. 6. a parallelogram with all sides equal
  4. 9. A perpendicular line segment from a vertex to the opposite side
  5. 12. The center of a triangle where medians meet
  6. 13. The center of a circle that goes around a triangle where perpendicular bisectors meet
  7. 14. Where the altitudes of a triangle meet
  8. 16. A line that cuts an angle in half
  9. 17. The same distance from something
  10. 18. A line segment connecting non-adjacent vertices of a polygon
Down
  1. 1. A line that cuts a line segment in half at a right angle
  2. 3. a parallelogram with 4 right angles
  3. 5. a quadrilateral with opposite sides parallel
  4. 7. A rectangle with all sides equal
  5. 8. A quadrilateral with two pairs of adjacent equal sides
  6. 10. A line segment from a vertex to the midpoint of the opposite side of a triangle
  7. 11. The center of a circle inside a triangle where angle bisectors meet
  8. 15. Having all angles equal