+AREA OF IRREGULAR POLYGONS +(1) The Area of a Quadrilateral, (a) In plane surveying the common method of finding the area of a quadrilateral is by the use of trigonometry, after measuring the four sides and the four angles. (6) If theanbsp;...

Title | : | A Laboratory Plane Geometry |

Author | : | William A. Austin |

Publisher | : | - 1926 |

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