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PROBLEM II.
Having two right lines given AB and CD, to determine the Locus of the
centers of all ſuch circles as may be drawn touching both the ſaid lines.
centers of all ſuch circles as may be drawn touching both the ſaid lines.
PROBLEM III.
Having two circles given whoſe centers are A and B;
to determine the Locus
of the centers of all ſuch circles as ſhall touch the two given ones.
of the centers of all ſuch circles as ſhall touch the two given ones.