Euclid's ELEMENTS OF GEOMETRY, From the Latin Tranflation of COMMANDINE. To which is added, A TREATISE of the Nature and Arithmetick Another of the ELEMENTS of Plain and A PREFACE, fhewing the Usefulness and Excellency By Doctor JOHN KEIL, F. R. S. Now done into ENGLISH. The Whole revis'd; where deficient, fupplied; where Many Faults committed by Dr. Harris, Mr. Cafwel, By Mr. SAMUEL CUNN. LONDON: Printed for THO. WOODWARD at the Half-Mcon, over- Professn Louis Kaspinski Dr. KEIL's PREFACE. A TOUNG Mathematician may be furprized, to fee the old obfolete Elements of Euclid appear afresh in Print; and that too after fo many new Elements of Geometry, as have been lately publish'd; especially fince those who gave us the Elements of Geometry, in a new Manner, would have us believe they have detected a great many Faults in Euclid. Thefe acute Philofophers, pretend to have difcover'd that Euclid's Definitions are not perfpicuous enough; that his Demonftra. tions are fcarcely evident; that his whole A Elements |