geometry puzzle

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Across
  1. 4. a point halfway between 2 points
  2. 5. an area that is in the middle of some larger region
  3. 6. relation with respect to comparative quantity or magnitude
  4. 8. lying in the same plane
  5. 10. a line that touches a curve at only one point
  6. 12. extending or lying across
  7. 13. gives a location
  8. 14. 2 lines that intersect and form 4 right angles
  9. 16. a closed two-dimensional figure composed of straight-line segments that meet at their endpoints
  10. 17. a parallelogram with all 4 sides and all 4 angles congruent
  11. 23. 3 sided polygon with 3 vertexs and 3 edges
  12. 24. the length of a straight line through the center of a circle
  13. 26. either of two equal and opposite angles formed by the intersection of two straight lines
  14. 27. a four-sided polygon, having four edges (sides) and four corners (vertices)
  15. 30. quadrilatoral with only 1 pair of parallel sides
  16. 34. angle measuring over 90 degrees
  17. 35. formed by 2 rays with a common end point
  18. 37. lying on the same line
  19. 41. exact same
  20. 42. a parallelogram with 4 right angles
  21. 43. a straight line from the center to the perimeter of a circle
  22. 45. line with a definite end point and start point
  23. 46. the number of square units needed to cover a surface
  24. 47. 2 collinear rays with a common endpoint
Down
  1. 1. relation with respect to comparative quantity or magnitude
  2. 2. an angle with its vertex on a circle and sides that contain chords of the circle
  3. 3. ray that cuts an angle into 2 small congruent parts
  4. 6. a polyhedron having a polygonal base and triangular sides
  5. 7. angle measuring exactly 90 degrees
  6. 9. triangle with 1 right angle
  7. 11. ratio of the length of the side opposite the given angle to the length of the hypotenuse of a right-angled triangle
  8. 15. sum equals 90 degrees
  9. 17. a triangle with no two sides of equal length
  10. 18. ratio of the adjacent side to the hypotenuse of a right-angled triangle
  11. 19. a round three-dimensional closed surface
  12. 20. the quality of being alike
  13. 21. a parallelogram with four equal sides
  14. 22. endpoint that continues in 1 direction forever
  15. 25. a line enclosing a plane area
  16. 28. a point where 2 or more curves/corners meet
  17. 29. sum equals 180 degrees
  18. 31. quadrilateral with 2 pairs of parallel sides
  19. 32. the statement that immediately follows the word "If" in a conditional
  20. 33. 6 sided polygon
  21. 35. a continuous portion of a circle
  22. 36. coplanar lines that do not intersect
  23. 38. set of points
  24. 39. angle measuring under 90 degrees
  25. 40. a round plane or figure whose boundary consistis of points from a fixed point(center)
  26. 44. an arc that measures exactly 180 degrees