*Area of an Irregular Polygon* 315 *409. The area of an irregular polygon may be found by dividing the polygon into triangles and finding the area of each triangle separately. When the three sides of the triangles can be found, the followinganbsp;...

Title | : | A New Geometry for Secondary Schools |

Author | : | Theodore Herberg, Joseph Barnet Orleans |

Publisher | : | - 1958 |

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