| Edward Laurence - Surveying - 1716 - 408 pages
...external < a, is equal to t wo right Angles (by tbe^tb /)confequently all the internal and external Angles **are equal to twice as many right Angles as the Figure has** fides. But all its internal Angles are equal to twiee as many right Angles eicept 4 as it has fides... | |
| Edward Wells - Arithmetic - 1723 - 358 pages
...the Sum of all the Angles in all the Tri~ angles, into which the Figure is divided, will together be **equal to twice as ma-ny right Angles, as the Figure has Sides. But** the Angles about P, the inward Point of each Figure, wherein all the Triangles concur, are (by Corol.... | |
| John Keill - Logarithms - 1723 - 444 pages
...Angles of alt the Triangles are equal to the inward Angles of the Fii gure. Therefore all the inward **Angles of the Figure are equal to twice as many Right Angles as** there art Triangles, that is, twice as many Rirot Angles, taking away four, as the Figure has Sides.... | |
| Euclid, John Keill - Geometry - 1733 - 444 pages
...Angles of all the Triangles are equal to the inward Angles of the Figure. Therefore all the inward **Angles of the Figure are equal to twice as many Right Angles as** there are Triangles, that is, twice as many Right Angles, taking nuayfour, as the, Figure has Sides.... | |
| Robert Simson - Trigonometry - 1762 - 488 pages
...every interior angle ABC with it's adjacent exterior *, ' 5- 1. ABD is equal b to two right angles; **therefore all the interior together with all the exterior...figure, are equal to twice as many right angles as** there are fides of the figure, that Is, by the foregoing Corollary, they are equal to all the interior... | |
| Euclid - Geometry - 1765 - 492 pages
...triangles are equal to ail the inward angles of the tiirht-lined figure ; therefore all the inward **angles of the figure are equal to twice as many right angles as** there are triangles ; that is, equal to twice as many right angles, wanting the angles of two triangles... | |
| Thomas Malton - 1774 - 484 pages
...fubtended by the Sides. ie equal to four Right Angles. And, all the internal Angles of any Right-lined **Figure are equal to twice as many Right Angles as the Figure has Sides,** wanting four, (Th. i. i0. i.) confequently, the external Angles being equal to thofe four (Th. 2. of... | |
| Robert Simson - Trigonometry - 1775 - 534 pages
...every interior angle ABC,'with its adjacent exterior b i3. i. ABD, is equal b to two right angles; **therefore all the interior, together with all the...figure, are equal to twice as many right angles as** there are fides of the figure; that is, by the foregoing corollary, they are equal to all the interior... | |
| Euclid - 1781 - 552 pages
...angle*. Becaufe every interior angle ABC, with its adjacent exterior ABD, is equal b to two right angles; **therefore all the interior, together with all the...figure, are equal to twice as many right angles as** there are fides of the figure ; that if, by the foregoing corollary, T\ they arc equal to all the inte-... | |
| John McGregor (teacher of mathematics.) - Mathematics - 1792 - 532 pages
...ft, I. 32. Euclid. All the anterior angles of any reoilineal figure, together with four right angles, **are equal to twice as many right angles as the figure has** fides. Hence the following rule. RULÉ. From double thé number of fides f übt vail: 4, and the remainder... | |
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