An elementary treatise on geometry : simplified for beginners not versed in algebra (1833)
Grund, Francis J. (Francis Joseph), 1805-1863 · Boston : Carter, Hendee & Co. · leaf 153
llel to AB, andthrough B, the line BD parallel to AC; the quadrilateralABCD is the required parallelogram. Demon. The opposite sides of the quadrilateral ABCD, areparallel to each other; therefore the figure is a parallelogram.(See Def. page 13,) * This is a better way of drawing parallel lines… … Problem IX. To divide a given line into any numberof equal parts. I. Solution. Let AB be thegiven line, and let it be required todivide it into five equal parts. 1. From the point A, draw anindefinite straight line AN, makingany angle you please with the lineAB. 2. Take any distance Am, andmeasure…
Geometry, Plane
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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-271-175.webp)
