From the point of intersection 0, as a centre, and with o D, oro L, as radius, describe the semicircle L c D. On G B produced, take F B equal to F L, ... On A B describe the triangle A B B, similar to the triangle D, the angle A B B being equal to the angle at the centre of the given polygon. Produce B B towards G. Draw c r parallel to A B, and join A B. And the triangle A B F is equal to the given triangle A B c.

Title | : | Practical Geometry, for the use of the Royal Military Academy at Woolwich |

Author | : | Isaac LANDMANN |

Publisher | : | - 1798 |

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