Illinois Society of Architects · Chicago · leaf 220
360^ br … _ = area of triangle 1 C 2. (7.) 2 Fig. 2. Area sector — area triangle = area a of segment 1 B 2 outside fracture line 1—2. ^ (8.) And -= distance C G in inches from center C to center of gravit.y G 12 aof segment area. (9.) b= Finally, 1=^ r. (10.) 12 aEquating and reducing: 1 I 3 a pi t :=:— , =^…
Architecture · Building · Architects
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
![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-318-210.webp)
