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