A treatise on surveying ; in which the theory and practice are fully explained (1860)
Alsop, Samuel · Philadelphia, E. C. & J. Biddle & co. · leaf 42
e. (41.1.) 81. The square on the hypothenuse of a right-angledtriangle is equal to the sum of the squares of the legs.(47.1.) Sec. II.] GEOMETRICAL PROPERTIES AND PROBLEMS. 39 82. Any figure described on the hypothenuse of a right-angled triangle is equal to the sum of the similar figuressimilarly… … 84. Angles in the same segment of a circle are equal.Thus, D and E (Fig. 11) are equal. 85. The angle in a semicircle is a right angle; the anglein a segment greater than a semicircle is acute; and that ina segment less than a semicircle is obtuse. 86. The sides about the equal angles of…
Surveying
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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-189-107.webp)
