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Across 2. a triangle with at least two congruent sides 8. coplanar lines that do not intersect 10. a segment whose endpoints lie on a circle 11. a circle drawn around a polygon so that each vertex of the polygon lies on the circle 12. a line that contains a chord 13. an angle formed by two radii drawn to consecutive vertices (2 wds) 18. any perpendicular segment connecting a vertex to an opposite side 21. a figure formed by two rays that have the same endpoint 23. two angles in a plane that have a common vertex and a common side but no common interior points (2 wds) 24. a 5-sided polygon 26. the angle formed when one side of a polygon is extended (2 wds) 28. a triangle with no sides congruent 29. two lines that intersect to form right angles (2 wds) 31. an angle with measure of 180 degrees (2 wds) 32. points all in one plane 34. a line in the plane that intersects a circle in exactly one point 35. a statement that can be proved 37. lines that are not coplanar 38. in a right triangle a side adjacent to the right angle 39. a quadrilateral with four congruent sides 41. a segment joining two non-consecutive vertices of a polygon 46. an equation stating that two ratios are equal 48. a segment from the vertex to the midpoint of the opposite side 49. a line that intersects two or more coplanar lines in different points 50. a quadrilateral with exactly one pair of parallel sides 51. a statement that is accepted without proof 52. the set of all points in space that are a given distance from a given point 53. a polygon that is both equiangular and equilateral 54. an arc of a circle cut off by the diameter

Down 1. a 4-sided polygon 3. two triangles with sides of equal length and angles of equal measure (2 wds) 4. an angle with measure between 90 and 180 degrees (2 wds) 5. a triangle with one obtuse angle (2 wds) 6. an angle with measure of 90 degrees (2 wds) 7. two angles whose sides form two pairs of opposite rays (2 wds) 9. a rectangular solid with square faces 10. segments that have equal length (2 wds) 14. a triangle with one right angle (2 wds) 15. the point that divides the segment into two congruent segments 16. a 6-sided polygon 17. a triangle with all sides congruent 19. a quadrilateral with both pairs of opposite sides parallel 20. the figure formed by three segments joining noncollinear points 22. two angles whose measures have the sum of 90 degrees 25. points all in one line 27. two points on a line and all the points between them 30. a quadrilateral with four right angles and four congruent sides 31. two angles whose measures have the sum 180 degrees 33. a plane figure formed by coplanar segments such that (1) each segment intersects exactly two other segments; and (2) no two segments with a common endpoint are collinear 36. a line, segment or ray that intersects a segment or angle and forms two congruent segments or angles 40. in a right triangle the side opposite the right angle 42. a quadrilateral with four right angles 43. a chord that contains the center of a circle 44. two triangles with congruent angles and corresponding sides in proportion 45. the distance from the center of a circle to any of its points 47. a triangle with three acute angles