Down |

1. | (points) all in one plane |

2. | two lines that intersect to form right angles |

3. | circles that lie in the same plane and have the same center |

4. | a 10-sided polygon |

5. | an angle with measure between 0 and 90 |

6. | a statement that can be proved |

7. | lines that are not coplanar |

8. | a line, ray, or segment which cuts another line segment into two equal parts |

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

11. | a polygon that is both equiangular and equilateral |

12. | a line that intersects two or more coplanar lines in different points |

14. | proving statements by reasoning from accepted postulates, definitions, theorems, and given information |

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

17. | a triangle with all sides congruent |

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

20. | two angles whose sides form two pairs of opposite rays |

23. | the set of points in a plane that are a given distance from a given point in a plane |

25. | a quadrilateral with four congruent sides |

27. | a 4-sided polygon |

28. | a line that contains a chord |

29. | two angles whose measures have the sum 180 |

30. | a plane figure formed by coplanar segments (sides) such that (1) each segment intersects exactly two other segments, one at each endpoint; and (2) no two segments with a common endpoint are collinear |

32. | a closed segment of a differentiable curve in the two-dimensional plane |

33. | two angles whose measures have the sum 90 |

37. | the figure formed by three segments joining three noncollinear points |

39. | an angle with measure of 90 |

40. | a 5-sided polygon |

42. | a kind of reasoning in which the conclusion is based on several past observations |

44. | an 8-sided polygon |

45. | a triangle with no sides congruent |

46. | the set of all points |