I.C.

ELEMENTS

OF

GEOMETRY:

CONTAINING

THE FIRST SIX BOOKS OF EUCLID,

WITH A

SUPPLEMENT

ON THE

QUADRATURE OF THE CIRCLE,

AND THE

GEOMETRY OF SOLIDS:

TO WHICH ARE ADDED

ELEMENTS OF PLANE AND SPHERICAL TRIGONOMETRY.

BY JOHN PLAYFAIR, F. R. S. LON. & EDIN. PROFESSOR OF NATURAL PHILOSOPHY, FORMERLY OF MATHEMATICS, IN THE UNIVERSITY OF EDINBURGH.

FROM THE LAST LONDON EDITION, ENLARGED.

Philadelphia:

PRINTED AND PUBLISHED AT No. 24 ARCH STREET.

A. WALKER, Agent.

1839.

Stereotyped by J. Howe.