Apollonius <Pergaeus>; Lawson, John, The two books of Apollonius Pergaeus, concerning tangencies, as they have been restored by Franciscus Vieta and Marinus Ghetaldus : with a supplement to which is now added, a second supplement, being Mons. Fermat's Treatise on spherical tangencies

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[Item 1.]
[2.] THE TWO BOOKS OF APOLLONIUS PERGÆUS, CONCERNING TANGENCIES, As they have been Reſtored by FRANCISCUSVIET A and MARINUSGHETALDUS. WITH A SUPPLEMENT.
[3.] THE SECOND EDITION. TO WHICH IS NOW ADDED, A SECOND SUPPLEMENT, BEING Monſ. FERMAT’S Treatiſe on Spherical Tangencies. LONDON: Printed by G. BIGG, Succeſſor to D. LEACH. And ſold by B. White, in Fleet-Street; L. Davis, in Holborne, J. Nourse, in the Strand; and T. Payne, near the Mews-Gate. MDCCLXXI.
[4.] PREFACE.
[5.] EXTRACT from PAPPUS’s Preſace to his Seventh Book in Dr. HALLEY’s Tranſlation. DE TACTIONIBUS II.
[6.] Synopsis of the PROBLEMS.
[7.] PROBLEMS CONCERNING TANGENCIES. PROBLEM I.
[8.] PROBLEM II.
[9.] PROBLEM III.
[10.] The GENERAL Solution.
[11.] PROBLEM IV.
[12.] PROBLEM V.
[13.] The general Solution.
[14.] PROBLEM VI.
[15.] The general Solution.
[16.] PROBLEM VII.
[17.] LEMMA I.
[18.] PROBLEM VIII.
[19.] Mr. Simpſon conſtructs the Problem thus.
[20.] PROBLEM IX.
[21.] LEMMA II.
[22.] LEMMA III.
[23.] PROBLEM X.
[24.] PROBLEM XI.
[25.] PROBLEM XII .
[26.] LEMMA IV.
[27.] LEMMA V.
[28.] PROBLEM XIII.
[29.] PROBLEM XIV.
[30.] SUPPLEMENT. PROBLEM I.
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For joining CI and GH, it is evident that theſe lines will alſo be parallel.
Hence MI: MC: : MH: MG, but MI: MC: : MB: MA, therefore
MH
:
MG: : MB: MA, and MG x MB = MH x MA. Again MH: MG
:
: MF: ME, but MH: MG: : MI: MC, therefore MF: ME: : MI: MC
and
MF x MC = ME x MI.

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