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# Geometry

### Informal Statements

Question | Answer |
---|---|

Informal Statement 1 | The sum of the three angles of a triangle is equal to one straight angle. |

Informal Statement 2 | Two straight lines can intersect at only one point. |

Informal Statement 3 | A line can be divided into two equal parts by only one point. |

Informal Statement 4 | A given angle can be divided into two equal parts by only one line. |

Informal Statement 5 | All straight angles are equal. |

Informal Statement 6 | All right angles are equal. |

Informal Statement 7 | Only one perpendicular can be drawn to a line at a point in the line. |

Informal Statement 8 | Complements of equal angles or of the same angle are equal. |

Informal Statement 9 | Supplements of equal angles or of the same angle are equal. |

Informal Statement 10 | The sum of all the angles about a point on one side of a straight line through the point is a straight angle. |

Informal Statement 11 | The sum of all the angles about a point is equal to 360 degrees. |

Informal Statement 12 | If the sum of two adjacent angles equals a straight angle, their exterior sides form one straight line. |

Informal Statement 13 | When two straight lines intersect, the vertical angles formed are equal. |

Informal Statement 14 | The sum of two sides of a triangle is greater than the third side. |

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bekaboo121390