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 |