Elements of geometry for the use of schools (1854)
Ireland. Board of National Education · Dublin : A. Thom · leaf 74
of the four angles formed bythe perpendiculars A I B, C I E, the four sidesAC, CB, BE, EA, are necessarily equal,and equally inclined to each other, which arethe properties of a square. When we have the square thus drawn, letus divide, as above, the arcs C K 13, P> L E, G4 ELEMENTS OF GEOMETRY.… … SND OF THE FIRST PART. ELEMENTS OF GEOMETRY. PART SECOND. GEOMETRICAL METHOD OF COMPARINGRECTILINEAL FIGURES. Whoever shall have paid some attention towhat has been hitherto said, in order to showhow men arrived at the knowledge requiredto measure lands, must have observed thatthe relative position…
Geometry
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![An illustration from Nicolai Copernici Torinensis De reuolutionibus orbium coelestium, libri VI : Habes in hoc opere iam recens nato, & aedito, studiose lector, motus stellarum, tam fixarum, quàm erraticarum, cum ex ueteribus, tum etiam ex recentibus obseruationibus restitutos: & nouis insuper ac admirabilibus hypothesibus ornatos. Habes etiam tabulas expeditissimas, ex quibus eosdem ad quoduis tempus quàm facillime caculare poteris. Igitur eme, lege, fruere. [Line in Greek] (1543)](https://img.insideoutlibrary.com/img/200/ia-nicolaicopernici00cope-319-211.webp)
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