Geometry Crossword puzzle

1234567891011121314151617181920212223242526272829
Across
  1. 4. angles that measures 90°.
  2. 5. of a ▲ - a segment from the vertex of the triangle perpendicular to the line containing the opposite side.
  3. 7. a diameter divides a circle into two congruent arcs.
  4. 8. is the segment whose endpoints lie on the circle.
  5. 9. are coplanar lines that do not intersect.
  6. 10. two distinct points on a circle divide the circle into two parts.
  7. 12. are two lines with a common point.
  8. 14. is a line that intersects the circle in two points.
  9. 15. is the point of concurrency of the three perpendicular bisectors of the sides of the triangle.
  10. 19. are points that do not lie on the same line.
  11. 20. is the point of concurrency of the three angle bisectors of the triangle.
  12. 21. is the point of concurrency of three medians of the triangle.
  13. 24. of a ▲ - a segment whose endpoints are a vertex of the triangle and the midpoint of the opposite side.
  14. 25. is a statement of the meaning of a word , term , or phrase which made use of previously defined terms
  15. 26. angles that measures less than 90°.
  16. 27. are two lines that are not coplanar.
  17. 28. is any set of points.
  18. 29. is a straight mark with two arrow heads.
Down
  1. 1. is the point that divides the segment into two congruent segments.
  2. 2. is a statement which is accepted as true without proof.
  3. 3. angles whose measure is more that 90°.
  4. 6. are two lines that if they intersect they form four right angles.
  5. 8. are points that lie on the same line.
  6. 11. is the set of all points.
  7. 13. a set of points that all lie in the same plane.
  8. 16. is the set of all points in a plane at a given distance from a given point.
  9. 17. are points that do not lie on the same plane.
  10. 18. the longest side in a right triangle.
  11. 22. are three or more lines that have a common point.
  12. 23. is any statement that can be proved true.