Construction Of A Center And Radius Of A Circle That Will Tangent A Given Circle

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An illustration showing how to construct the center and radius of a circle that will tangent a given circle. “Through the given point C, draw the tangent GF; bisect the angle FGE; then o is the center of the required circle that will tangent AB at C, and the line DE.”


Albert A. Hopkins Scientific America: Handy Book Of Facts And Formulas (New York: Munn & Co., Inc., 1918) 35


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