| Royal Society (Great Britain) - 1722
...which were before prov'd to be equal to А В С, ВАС. QED Hence may be inferr'd as a Corollary, **That the three Angles of every Triangle are equal to two Right** ones ; for the Angks А С В -V- В С E, are meafur'd by a Semicircle, and therefore equal to two... | |
| Royal Society (Great Britain) - 1749
...BCD-fJ)CE, which was before prov'd to be equal to ABC, ВАС. Q ED Hence may be inferr'd as a Corollary, **That the three Angles of every Triangle are equal to two Right** ones ; for the Angles А С В -|- В С Е, are meafur'd by a Semicircle, and therefore equal to two... | |
| John Potter - 1753 - 395 páginas
...of the Sides is oppofite the given Angle ; but mud be folved by the fecond Rule, Page 224. Now, as **the three Angles of every Triangle are equal to two right Angles, or** 180°, the Angle at A 36° . 40', being fubtrafted from 180°, leaves 143° . 20', the Sum of the two... | |
| Richard Griffith, Mrs Griffith (Elizabeth) - 1757
...as well quote ddam for breathing, becaufe he was the firft Creature who did fo, as Euclid for faying **that the three Angles of every Triangle are equal to two right** ones, becaufe he was the firft Perfon who demonftrated that Propofition. A quoting Author is juft as... | |
| Robert Simson - 1762 - 466 páginas
...; any two of its oppofite angles are together equal to two right angles. Join AC, BD ; and becaufe **the three angles of every triangle are equal • to two right angles,** the three angles of the triangle CAB, viz. the angles CAB, ABC, BCA are equal to two right angles,... | |
| Euclid - 1765 - 464 páginas
...it : I fay, its oppofite angles are equal to two right angles. Join Ac, BD. Then becaufe [by 32. i.] **the three angles of every triangle are equal to two right angles,** the three angles CAB, ABc, BC A of the triangle ABC will be equal to two right angles. But [by 2I.... | |
| Richard Griffith, Elizabeth Griffith - 1767
...as well quote Adam for breathing, becaufe he was the firft creature who did fo, as Euclid for faying **that the three angles of every triangle are equal to two right** ones, becaufe he was the firft perfon who demonftrated that propofition *. A quoting author is juft... | |
| Richard Shepherd, Soame Jenyns - 1768
...that Julius Casfar was ftabbed in the Senate-houfe, or Richard the lild. flain in Bofworth field, as **that the three angles of every triangle are equal to two right** ones : yet I .believe the afcertainment of thofe fadts, as firmly as I do the demonftration <;f this.... | |
| Richard Shepherd - 1768 - 227 páginas
...that Julius Casfar was ftabbed in the Senate-hbufe, or Richard the Hid. flain in Bofworth field, as **that the three angles of every triangle are equal to two right** Ones : yet I believe the afcertainment of thofe facts, as firmly as I do the demonftration of this.... | |
| Thomas Malton - 1774 - 440 páginas
...wanting four ; and by the 2nd, all the external Angles are equal to four Right Angles. Alfo, by the loth, **the three Angles of every Triangle are equal to two Right Angles;** and all the Angles, about a Point, are equal to four; (2.i.) confequently, fince the three Angles DEF,... | |
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