geometry A bonus

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Across
  1. 5. a polygon where every vertex of the polygon is tangent to the circle
  2. 7. a proof where the statement to be proved is assumed to be false and a contradiction is shown
  3. 8. a quadr. with four congruent sides
  4. 9. all of the interior angles are less then 180 degrees
  5. 10. each side of the polygon is tangent to the circle
  6. 11. a quadr. with one pair of parallel sides
  7. 13. the point of concurrency of the three medians of a triangle also known as the center of gravity
  8. 14. has at least one interior angle greater than 180 degrees
  9. 15. the point of concurrency of the three angle bisectors of a triangle
  10. 17. a set of points that satisfied a given condition
  11. 22. the point of concurrency of the three altitudes of a triangle
  12. 24. the same distance from z or more objects
  13. 25. a set of three positive integers a,b, and c.such a triple is commonly written.
Down
  1. 1. a polygon both equilateral and equiangular
  2. 2. the point of concurrency of the three perpendicular bisectors of a triangle
  3. 3. a segment who's endpoints are a vertex of a triangle and a midpoint of the opposite side
  4. 4. a quadr. with two pairs of congruent consecutive sides
  5. 6. a segment that joins the midpoint of two of the triangles
  6. 12. a perpendicular segment from a vertex to a line containing the opposite side
  7. 16. a quadr. with four congruent sides and four congruent angles
  8. 18. three or more lines that intersect at one point
  9. 19. connecting two consecutive vertices
  10. 20. a point where three or more lines coincide
  11. 21. a quadr. with two pairs of parallel sides
  12. 23. a quadr. with 4 right angles