Mathematics Crossword Puzzle

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Across
  1. 4. a quadrilateral with exactly one pair of opposite sides parallel
  2. 6. it is represented by a dot
  3. 8. a five-sided polygon
  4. 9. segment, it is a portion of a line
  5. 12. a polygon with equal sides
  6. 14. a parallelogram with all four sides congruent
  7. 16. a rectangle with all four sides congruent
  8. 17. a three-sided polygon
  9. 23. a seven-sided polygon
  10. 24. an angle with a measure of 90°
  11. 29. a polygon with all interior angles < 180°
  12. 30. a polygon's boundary
  13. 32. angles that are formed by a base and legs
  14. 35. a polygon with equal angles
  15. 37. lines that intersect and form a right angle
  16. 38. angle less than 90 degrees (6)
  17. 39. a polygon's building block
  18. 40. a polygon is _____ if its sides and angles are equal
  19. 41. lines that do not intersect
  20. 42. the property of a parallelogram's opposite sides is _____.
  21. 44. a polygon with twelve sides
  22. 45. two nonadjacent angles formed by two intersecting lines
  23. 47. this is where the edges meet
  24. 49. a six-sided polygon
Down
  1. 1. a statement that needs to be proven before being accepted
  2. 2. an eight-sided polygon
  3. 3. a line segment joining two nonconsecutive vertices of a polygon
  4. 5. two angles whose sum of the measures is 180°
  5. 7. a polygon with eleven sides
  6. 10. a nine-sided polygon
  7. 11. a geometric surface with length and width
  8. 13. a polygon with unequal sides/angles
  9. 15. it is an angle that forms a straight line
  10. 18. it is an angle in a complete rotation
  11. 19. quadrilateral has _____ number of vertices
  12. 20. polygon with at least one interior angle > 180°
  13. 21. a quadrilateral with two pairs of opposite sides that are parallel
  14. 22. angles that shares a common side and vertex but no interior points in common
  15. 25. a trapezoid with congruent legs
  16. 26. the sum of ______ angles in a quadrilateral is 360°
  17. 27. a closed plane figure consists of four line segments
  18. 28. it is the sum of a polygon's side lengths
  19. 29. two angles whose sum of the measures is 90°
  20. 31. a parallelogram with four right angles
  21. 33. angle greater than 90 degrees
  22. 34. a polygon with ten sides
  23. 36. an angle greater than 180° but less than 360° is called ______.
  24. 43. a quadrilateral with two pairs of congruent and adjacent sides
  25. 46. a line segment has _____ endpoints
  26. 48. a branch of math that deals with shapes