Divide A Line Proportionately

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An illustration showing the construction used to divide the line AB in the same proportion of parts as AC. “Join C and B, and through the given divisions 1, 2, and 3 draw lines parallel with CB, which solves the problem.”


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


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