Mathematics 9

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Across
  1. 3. Two lines, line segments, or rays that intersect to form a right angle
  2. 5. A closed figure formed by three or more line segments, called sides, that intersect only at their endpoints.
  3. 6. A polygon with 13 sides and 13 vertices
  4. 8. An angle that measures exactly 360°
  5. 13. A polygon with 8 sides and 8 vertices
  6. 16. The region outside a geometric figure or an angle formed by extending one side of a polygon
  7. 17. A polygon with 17 sides and 17 vertices
  8. 18. A polygon with 15 sides and 15 vertices
  9. 21. A part of a line defined by two endpoints
  10. 23. An infinite set of points extending in both directions without end
  11. 24. an angle with a measure of 90°
  12. 29. A angle that measures greater than 180° and less than 360°
  13. 30. A polygon with 11 sides and 11 vertices
  14. 31. A polygon with 18 sides and 18 vertices
  15. 33. a quadrilateral with two pairs of congruent and adjacent sides
  16. 34. A polygon that is both equiangular and equilateral
  17. 36. a line segment joining two nonconsecutive vertices of a polygon
  18. 37. Two lines or line segments that never intersect and are always the same distance apart
  19. 38. A polygon that is not equiangular or equilateral
  20. 39. A polygon with 5 sides and 5 vertices
  21. 41. angles formed by a base and the legs
  22. 42. A polygon with 19 sides and 19 vertices
  23. 45. The endpoint of a vector or segment, indicating its final position.
  24. 46. The starting point of a ray or vector.
  25. 47. A polygon with 3 sides and 3 vertices
  26. 49. a close plain figure consisting of four line segments or sides
  27. 54. a rectangle with all four sides congruent
  28. 55. The region inside a geometric figure or the space within the boundaries of a polygon or angle
  29. 59. two side sharing a common side and vertex but no interior points in common
  30. 60. Having the same shape and size
  31. 61. A polygon with 14 sides and 14 vertices
  32. 62. A polygon with 10 sides and 10 vertices
  33. 63. A polygon with 16 sides and 16 vertices
Down
  1. 1. two nonadjacent angles formed by two intersecting lines
  2. 2. A unit of measurement for angles
  3. 4. A polygon with 9 sides and 9 vertices
  4. 7. a parallelogram with four right angles
  5. 9. a quadrilateral with exactly one pair of opposite side parallel
  6. 10. A theorem that states that the sum of the interior angle measures of a convex polygon with n sides is (n-2)180 degrees
  7. 11. An angle that measures greater than 0° and less than 90°
  8. 12. A polygon with at least one interior angle greater than 180°
  9. 14. An angle that measures exactly 0°
  10. 15. two angles whose sum of the measurement is 90°
  11. 19. A polygon with 6 sides and 6 vertices
  12. 20. A theorem that states that the sum of the exterior angle measures, one angle at each vertex, of a convex polygon is 360 degrees
  13. 22. a quadrilateral with two pairs of opposite sides are parallel
  14. 25. Vertices or sides of a polygon that are not adjacent
  15. 26. the segment joining the midpoints of the legs
  16. 27. Indicates a location in space that has no size, width, length, or depth; it is represented by a dot.
  17. 28. A polygon with 20 sides and 20 vertices
  18. 32. a trapezoid with congruent legs
  19. 35. A flat, two-dimensional surface that extends infinitely in all directions and has no thickness.
  20. 40. A polygon where all interior angles are less than 180°
  21. 43. A figure formed by two rays sharing a common endpoint called the vertex.
  22. 44. elements that are adjacent or next to each other in sequence
  23. 48. two angles whose sum of the measures is 180°
  24. 50. An angle that measures exactly 180°
  25. 51. a parallelogram with all four sides congruent
  26. 52. A polygon with 12 sides and 12 vertices
  27. 53. The study of figures on a plane or on a space
  28. 56. An angle that measures greater than 90° and less than 180°
  29. 57. a statement that needs to be proven before being accepted
  30. 58. A polygon with 6 sides and 6 vertices