81 (r) If a diameter cuts any other chord at right angles, it bisects it ; and conversely, if a diameter bisects any other chord, it cuts it at right ... 80 (A) If two circles have a common chord, it shall be bisected at right angles by the straight line joining their centres cor. ... the centre of the circle 8 1 (m) From any other point than the centre there cannot be drawn to the circumference of a circle more than two straightanbsp;...

Title | : | Geometry, Plane, Solid, and Spherical, in Six Books |

Author | : | Pierce Morton |

Publisher | : | - 1830 |

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