geometry vocabulary

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Across
  1. 5. if a=b, thena/c=b/c
  2. 8. the intersection of two rays at an endpoint
  3. 10. if two angles form a linear pair, then they are supplementary
  4. 12. perpendicular lines form right angles
  5. 14. if a=b, then a+c=b+c
  6. 15. a flat surface made up of 3 points and extends indefinitely in al directions
  7. 16. a segment with endpoints at the center and on the circle
  8. 19. points that lie on the same plane
  9. 20. an angle with a degree less than 90
  10. 22. two angles are complementary if and only if the sum of their measures is 90
  11. 23. the common endpoint of an angle
  12. 25. an arc with endpoints on the diameter
  13. 26. an angle with a degree measuring 90
  14. 27. two angles that are next to each other and share a common side
  15. 30. lines have the same slope
  16. 32. a line that intersects the circle in two places
  17. 36. if a=b, then a-c=b-c
  18. 37. a portion of the edge of the circle defined by two endpoints
  19. 38. if equal
  20. 41. a line that extends indefinitely in one direction
  21. 42. if AB is congruent to CD and CD is congreunt to EF, then AB is congruent to EF
  22. 44. a segment with endpoints on the circle
  23. 45. lines have opposite reciprocal slopes
  24. 46. if AB is congruent to CD, then CD is congruent to AB
  25. 47. if a=b, then axc=bxc
  26. 48. If a=b then a may be replaced by b in ant expression or equation
  27. 49. two angles directly across from each other on intersecting lines
Down
  1. 1. any two angles whose sum is 180
  2. 2. if two angles supplementary to the same angle, then are congruent
  3. 3. if two angles are vertical, then they are congruent
  4. 4. non-collinear: points that don't lie on the same line
  5. 6. two angles are complementary if and only if the sim of their measures is 90
  6. 7. the measure of two angles are equal if and only if the angles are cungruent
  7. 9. an angle bisector divides an angle into two equal parts
  8. 11. a location with no size or shape
  9. 13. any two angles whose sum is 90
  10. 17. made up of points with no thickness or width extends infinity in both directions
  11. 18. angle with a degree measure of 180
  12. 19. if two angles complentary to the same angle, then are congruent
  13. 21. a(b+c), then a(b+c)=ab+ac
  14. 24. a line that intersects the circle at exactly one place
  15. 28. AB+BC=AC
  16. 29. an angle measures 90 if and only if it is a right anlge
  17. 31. if two angle form a right angle, then they are complementary
  18. 33. two angles that ar adjacent and supplementary
  19. 34. a segment is a point that divides the segment into two equal halves
  20. 35. two angles across from each other intersecting lines
  21. 39. for any segment AB, AB is congruent to AB
  22. 40. an angle with a degree measure greater than 90
  23. 43. a chord that passes through the center