Higbee, F. G · New York, John Wiley & Sons · leaf 210
To draw a line tangent to two given circles. Let MANB be one circle and CD the other circle to which theline is to be drawn tangent. Draw PO connecting the centers.Lay off NI equal to PD and describe the circle HIJK. Thiscircle is equal in radius to the difference between the radii of thetwo given…
Geometry, Descriptive
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