Across |

4. | a line segment of a triangle that joins a vertex to the midpoint of the opposite side |

5. | a number with a square root symbol |

6. | a quadrilateral with only one pair of parallel sides |

8. | a triangle with two congruent sides |

10. | a tool used to measure angles |

11. | the level of the viewer's eyes as the viewer looks across a distance in a drawing |

14. | a special quadrilateral with both pairs of opposite sides parallel |

15. | a line that bisects a line segment and is perpendicular to the line segment |

16. | a triangle with all sides congruent |

17. | two angles that have a common vertex and a common ray |

19. | a pair of angles whose measures have a sum of 180 degrees |

22. | an angle that is equal to 90 degrees |

23. | interior angles that are on opposite sides of a transversal |

27. | interior angles that are on the same side of the transversal |

29. | a closed geometric figure made up of at least three line segments or sides |

30. | the point where the three medians of a triangle meet |

32. | a line segment of a triangle that joins a vertex to the line containing the opposite side and that is perpendicular to that side |

33. | an interior angle of a triangle not adjacent to the given exterior angles |

34. | a triangle with all angles equal |

35. | a pair of angles whose measures have a sum of 90 degrees |

37. | a geometric figure made up of infinitely many points; it extends endlessly in two directions |

39. | a line that intersects two different lines at two different points |

43. | each of the sides that form the right angle of a right triangle |

44. | angles that have the same measure |

45. | a parallelogram with four right angles and four congruent sides |

46. | a statement that is accepted without proof |

47. | the side opposite the right angle of a right triangle |

48. | a triangle with three acute angles |

51. | a part of a line; it has two endpoints |

53. | a parallelogram with four right angles |

54. | the number that was squared |

55. | a polygon that has all congruent sides and all congruent angles |

56. | a part of a line; it has one endpoint and extends endlessly in one direction |

57. | a triangle with no congruent sides |

58. | a ray that divides an angle into two congruent angles |