An elementary treatise on geometry : simplified for beginners not versed in algebra (1833)
Grund, Francis J. (Francis Joseph), 1805-1863 · Boston : Carter, Hendee & Co. · leaf 158
5. Draw the radius AC parallel to BD. 6. Through C and D draw a straight line, and it willbe a tangent com::;on to the two given circles. Demox. The radius AC being equal and parallel to ED, itfollows that AC ED is a parallelogram ; and because the tangentAE is perpendicular to the radius BE (page… … 154 GEOMETRY. If it be required to draw a tangentcommon to two given circles, whichshall touch them on opposite sides, then 1. From B as a centre, with a radiusequal to the sum of the radii of the givencircles, describe a third circle. 2. From A draw a tangent AE to thatcircle. 3. Join BE, cutting…
Geometry, Plane
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