Across |

1. | a 6-sided polygon |

2. | a quadrilateral with four right angles and four congruent sides |

6. | an equation stating that two ratios are equal |

9. | the point that divides the segment into two congruent segments |

12. | a triangle with at least two congruent sides |

14. | a segment from the vertex to the midpoint of the opposite side |

15. | a triangle with no sides congruent |

17. | a rectangular solid with square faces |

18. | a figure formed by two rays that have the same endpoint |

19. | two angles whose sides form two pairs of opposite rays (2 wds) |

20. | an angle formed by two radii drawn to consecutive vertices (2 wds) |

22. | points all in one plane |

23. | a quadrilateral with both pairs of opposite sides parallel |

25. | a triangle with three acute angles |

29. | an angle with measure of 90 degrees (2 wds) |

30. | a quadrilateral with exactly one pair of parallel sides |

31. | a circle drawn around a polygon so that each vertex of the polygon lies on the circle |

34. | a segment joining two non-consecutive vertices of a polygon |

35. | a line that contains a chord |

40. | 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 |

41. | a triangle with one obtuse angle (2 wds) |

42. | coplanar lines that do not intersect |

43. | two lines that intersect to form right angles (2 wds) |

45. | a quadrilateral with four congruent sides |

47. | a statement that is accepted without proof |

48. | a triangle with all sides congruent |

49. | a triangle with one right angle (2 wds) |

51. | any perpendicular segment connecting a vertex to an opposite side |

52. | an arc of a circle cut off by the diameter |

53. | an angle with measure between 90 and 180 degrees (2 wds) |

54. | in a right triangle a side adjacent to the right angle |