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 الكتب الكتب 21 - 30 من 192 فيTherefore all the angles of the figure, together with four right angles, are equal.... Therefore all the angles of the figure, together with four right angles, are equal to twice as many right angles as the figure has sides. A Popular Course of Pure and Mixed Mathematics ...: With Tables of ... - الصفحة 181
بواسطة Peter Nicholson - 1825 - عدد الصفحات: 372
عرض كامل - حول هذا الكتاب The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - عدد الصفحات: 528
...the triangles : that is a, together is. 1. with four right angles. Therefore all the angles of the figure, together with four right angles, are equal...twice as many right angles as the figure has sides. Cor. 2. All the exterior angles of any rectilineal figure' are together equal to four right angles....
عرض كامل - حول هذا الكتاب Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1819 - عدد الصفحات: 333
...to all the angles of the figure, together with four right angles, that is, the angles of the figure are equal to twice as many right angles as the figure has sides, wanting four. COR. 2. All the exterior angles of any rectilineal figure are tegether equal to four...
عرض كامل - حول هذا الكتاب The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - 1821 - عدد الصفحات: 516
...angles. Wherefore if a side of a triangle, &c. QED COK. 1. All the interior aigles of any rectilineal figure, together with four right angles, are equal to twice as many right E' angles as the figure has sides. For any rectilineal figure ABCDE can be divided into as many triangles...
عرض كامل - حول هذا الكتاب The Elements of geometry [Euclid book 1-3] in general terms, with ..., الجزء 3

Euclides - 1821
...angle. Cor. 6 AH the internal angles of any rectilineal figure together with four right angles are = to twice as many right angles as the figure has sides. For if yon assume any. point within the given figure and draw lines from each of the angles to it, the...
عرض كامل - حول هذا الكتاب The First Six Books with Notes

Euclid - 1822 - عدد الصفحات: 179
...therefore equal to B AE and EAC. Cor. 6. All the internal angles of any rectilineal figure, ABCDE, together with four right angles, are equal to twice as many right angles as the figure has sides. Take any point F within the figure and draw the right lines FA, FB, FC, FD, and FE. There are formed...
عرض كامل - حول هذا الكتاب Euclid's Elements of Geometry: The Six First Books. To which are Added ...

Rev. John Allen - 1822 - عدد الصفحات: 494
...as many right angles, except four, as the figure has sides ; and all tbe angles of these triangles are equal to twice as many right angles as the figure has sides (32. 1 /CM.), therefore the angles of these triangles which are at their common vertex A, being those...
عرض كامل - حول هذا الكتاب A Course of Mathematics: For the Use of Academies, as Well as Private ...

Charles Hutton - 1822
...triangles, is equal to two right angles (th. 17) ; therefore the sum of the angles of all the triangles is equal to twice as many right angles as the figure has sides. But the sum of all the angles about the point p, which are so / many of the angles of the triangles,...
عرض كامل - حول هذا الكتاب Euclid's Elements of Geometry: The Six First Books. To which are Added ...

Rev. John Allen - 1822 - عدد الصفحات: 494
...two right angles [13. 1} ; therefore all the exterior and interior angles of the figure are together equal to twice as many right angles as the figure has sides ; but the interior angles are equal to twice as many right angles, except four, as the figure has sides...
عرض كامل - حول هذا الكتاب A treatise on navigation, and nautical astronomy

Edward Riddle - 1824
...twice as many right angles as the figure has sides ; or the interior angles of the figure, themselves, are equal to twice as many right angles as the figure has sides, wanting four right angles. QED Cor. 1. All the interior angles of any quadrilateral figure are together...
عرض كامل - حول هذا الكتاب Elements of arithmetic, algebra and geometry

George Lees - 1826 - عدد الصفحات: 207
...to all the angles of the figure, together with four right angles ; that is, the angles of the figure are equal to twice as many right angles, as the figure has sides wanting four. PROP. XIII. THEOREM. If two triangles, BAG, EOF, have two angles, BAG, ABC, and a side...
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