Across
- 6. has a circle inside it, touching all its sides
- 7. line segment joining two nonconsecutive vertices of a polygon
- 8. the point where a side of a quadrilateral crosses an axis
- 9. do not require a definition but can be describe
- 11. all sides and angles equal (a square)
- 12. where all interior angles are less than 180°, and the diagonals lie inside the shape.
- 14. the sides can form another quadrilateral, which will always be a parallelogram.
- 18. the side next to the reference angle in a right triangle
- 20. parallelogram with all four sides congruent
- 22. points lying on the same straight line
- 23. the side across the reference angle in a right triangle
- 26. the study of figures on a plane or on a space
- 27. two nonadjacent angles formed by two intersecting lines
- 29. uses facts, rules, and definitions
- 34. a trapezoid with congruent legs
- 35. needs to be proven before being accepted
- 37. a line crossing through a quadrilateral
- 39. The space enclosed by the quadrilateral, calculated differently for each type.
- 40. The sum of the lengths of all sides of the quadrilateral.
- 44. at least one interior angle greater than 180 degrees, and one diagonal lies outside the shape
- 45. the most geometrically perfect quadrilateral
- 48. uses patterns
- 49. closed plane figure consisting of four line segments or sides
- 50. angles are all less than 90°
- 54. non common side forming a straight angle
- 56. Some quadrilaterals, like squares and rectangles, have lines of symmetry and rotational symmetry.
- 58. two angles whose sum of the measures is 90
- 59. flat surface
- 61. parallelogram with four right angles
- 62. more than 90 degree
- 63. a quadrilateral with no lines of symmetry
Down
- 1. These are called cyclic quadrilaterals
- 2. location or position
- 3. A polygon with 12 sides
- 4. two angles whose sum of the measures is 180"
- 5. quadrilateral with exactly one pair of opposite sides parallel
- 6. sides and angles of different lengths and measures
- 10. The angles adjacent to the same base in a trapezium are supplementary (add up to 180°).
- 13. the intersection of altitudes of a quadrilateral
- 15. lines in a plane that do not intersects
- 16. quadrilaterals that are identical in size and shape
- 17. quadrilateral with no sides crossing
- 19. an angle with a measure of 90
- 21. quadrilateral with two pairs of congruent and adjacent sides
- 24. A 15-sided polygon
- 25. The perpendicular distance from the center of a cyclic quadrilateral to one of its sides.
- 28. rectangle with all four sides congruent
- 30. The point of intersection of the medians of a quadrilateral.
- 31. divides an angle into two congruent angles
- 32. angle formed by two rays or lines that meet at a point
- 33. sides in the same ratio in similar quadrilaterals
- 36. lines that intersect and form a right angles
- 38. infinite number of line segment
- 41. angles formed by a base and a legs
- 42. A polygon with six sides
- 43. a polygon with 5 sides
- 46. a polygon with 3 sides
- 47. quadrilateral in 3d space with non-coplanar vertices
- 51. two angles sharing a common side and vertex but no interior points in common
- 52. quadrilateral with two pairs of opposite sides that are parallel
- 53. sides crossing each other
- 55. starts at one point and extends infinitely
- 56. the steepness of a side of a quadrilateral in a coordinate plane
- 57. the figure formed by two rays, called the sides of the angle, sharing a common endpoint called the vertex.
- 60. lines meeting at a single point