Let 1, 2, (Fig. 9.) be the two given straight lines; place 1, 2 in one straight line 3 4 5, 3 4 being equal to 1, and 4 5 to 2 ... 0 Let 1 2 3 4 (Fig. 2.) be the given trapezium ; divide it into two triangles by joining two opposite angles, as 2, 4; draw aanbsp;...

Title | : | The Modern Builder's Guide |

Author | : | Minard Lafever |

Publisher | : | - 1849 |

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