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Dean's Stereotype Edition.

O 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. LOND. & EDIN.

PROFESSOR OF NATURAL PHILOSOPHY, FORMERLY OF MATHEMATICS, IN THE
UNIVERSITY OF EDINBURGH.

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NEW YORK:

W. E. DEAN, PRINTER, & PUBLISHER.

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