## Elementary Geometry |

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### Contents

Angles | 7 |

Regular polygons | 17 |

Pyramidsthe Tetrahedron | 26 |

Parallels and perpendiculars | 35 |

Cube cuboid prism wedge | 42 |

Heights and distances | 48 |

Points lines surfaces solids | 55 |

THEORETICAL GEOMETRY | 63 |

MISCELLANEOUS EXERCISES | 115 |

third side has the greater included angle | 128 |

SUBDIVISION OF A STRAIGHT LINE | 140 |

The locus of a point which is equidistant | 146 |

COORDINATES 9 | 152 |

PAGE | 159 |

AREA OF PARALLELOGRAM | 167 |

AREA OF POLYGON | 178 |

the same straight line | 67 |

then the two straight lines are parallel | 71 |

Straight lines which are parallel to the same | 77 |

ANGLES OF A TRIANGLE A POLYGON | 80 |

CONSTRUCTIONS | 103 |

If a triangle and a parallelogram stand | 185 |

MISCELLANEOUS EXERCISES ON AREA | 186 |

ILLUSTRATIONS | 201 |

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### Common terms and phrases

acute altitude base bearing bisector bisects calculate called centre circle congruent Construct contained copy corners corresponding Data describe diagonal distance divided Draw Draw a straight drawn edge equal equidistant equilateral triangle equivalent exercises exterior angles falls feet figure Find the area formed four given given straight line greater half height inches intersect isosceles triangle length locus mark means Measure meet method mid-point miles moves observed obtuse opposite sides pair parallel parallelogram perpendicular possible produced prove quadrilateral ABCD radius rect rectangle regular Repeat Ex represent respectively rhombus right angles right-angled triangle set square Show square straight line surface taking THEOREM triangle ABC units of length vertex vertices yards

### Popular passages

Page xiv - If there are three or more parallel straight lines, and the intercepts made by them on any straight line that cuts them are equal, then the corresponding intercepts on any other straight line that cuts them are also equal.