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By which Thèon, or others, have long ago vitiated these Books, are corrected, and some of

Luclid's demonstrations are restored.

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TO THIS LDITION ARE ALSO AXNESED,
ELEMENTS OF PLANE AND SPHERICAL TRIGONOMETRY.

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PHILADELPHIA:

PUBLISHED BY JOHNSON AND WARNER,
AND SOLD AT THEIR BOOKSTORES IN PHILADELPHIA, RICHIMOND, (Vir.)

AND LEXINGTON, (Ken.)

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