The Elements of Euclid, the parts read in the University of Cambridge [book 1-6 and parts of book 11,12] with geometrical problems, by J.W. Colenso1846 |
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Página 13
... equal to EF ( Hyp . ) : And BC coinciding with EF , BA and AC shall coincide with ED and DF ; for , if the base BC ... angle BAC coincides with the angle EDF , and is equal to it . Wherefore , If two triangles & c . Q.E.D. PROP ...
... equal to EF ( Hyp . ) : And BC coinciding with EF , BA and AC shall coincide with ED and DF ; for , if the base BC ... angle BAC coincides with the angle EDF , and is equal to it . Wherefore , If two triangles & c . Q.E.D. PROP ...
Página 14
... angle DAF is equal to the angle EAF : Wherefore the given rectilineal angle BAC is bisected by the straight line AF . Q. E. F. PROP . X. PROB . To bisect a given finite straight line , that is , to divide it into two equal parts . Let ...
... angle DAF is equal to the angle EAF : Wherefore the given rectilineal angle BAC is bisected by the straight line AF . Q. E. F. PROP . X. PROB . To bisect a given finite straight line , that is , to divide it into two equal parts . Let ...
Página 16
... equal to HG , and HC common to the two triangles FHC , GHC , the two sides FH , HC are equal to the two GH , HC , each to each , and the base CF is equal to the base ... angle CBE is equal to the two angles CВА 16 EUCLID'S ELEMENTS .
... equal to HG , and HC common to the two triangles FHC , GHC , the two sides FH , HC are equal to the two GH , HC , each to each , and the base CF is equal to the base ... angle CBE is equal to the two angles CВА 16 EUCLID'S ELEMENTS .
Página 17
Euclides John William Colenso (bp. of Natal). the angle CBE is equal to the two angles CВА , АВЕ , to each of these equals add the angle EBD ; therefore the angles CBE , EBD are equal to ... angle CBE is equal to the two angles CВА...
Euclides John William Colenso (bp. of Natal). the angle CBE is equal to the two angles CВА , АВЕ , to each of these equals add the angle EBD ; therefore the angles CBE , EBD are equal to ... angle CBE is equal to the two angles CВА...
Página 18
Euclides John William Colenso (bp. of Natal). right angles ( Hyp . ) ; therefore the angles CBA , ABE are equal to the angles CBA , ABD : From each of these equals take away the common angle CBA ; then the remaining angle ABE is equal to ...
Euclides John William Colenso (bp. of Natal). right angles ( Hyp . ) ; therefore the angles CBA , ABE are equal to the angles CBA , ABD : From each of these equals take away the common angle CBA ; then the remaining angle ABE is equal to ...
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The Elements of Euclid, the Parts Read in the University of Cambridge [Book ... Euclides Sin vista previa disponible - 2016 |
Términos y frases comunes
AB is equal ABCD adjacent angles angle ABC angle ACB angle BAC angle BCD angle EDF angle equal base BC BC is equal centre chord circle ABC circumference cuts the circle diameter double draw equal angles equal to F equiangular equilateral triangle equimultiples exterior angle fore given circle given line given point given straight line gnomon greater ratio inscribed intersection isosceles triangle less Let ABC Let the straight lines be drawn lines drawn meet multiple opposite angles opposite sides parallel to BC parallelogram pentagon perpendicular plane polygon PROB produced proportionals Q.E.D. PROP quadrilateral rectangle contained rectilineal figure remaining angle right angles right-angled triangle segment semicircle shew shewn square of AC straight line &c THEOR touches the circle triangle ABC twice the rectangle Wherefore
Pasajes populares
Página 42 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Página 4 - Let it be granted that a straight line may be drawn from any one point to any other point.
Página 33 - F, which is the common vertex of the triangles: that is », together with four right angles. 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.
Página 62 - If a straight line be divided into two equal parts, and also into two unequal parts; the rectangle contained by the unequal parts, together with the square of the line between the points of section, is equal to the square of half the line.
Página 22 - If from the ends of a side of a triangle, there be drawn two straight lines to a point within the triangle, these shall be less than the other two sides of the triangle, but shall contain a greater angle.
Página 58 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line.
Página 146 - ... may be demonstrated from what has been said of the pentagon : and likewise a circle may be inscribed in a given equilateral and equiangular hexagon, and circumscribed about it, by a method like to that used for the pentagon.
Página 194 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Página 2 - A circle is a plane figure contained by one line, which is called the circumference, and is such, that all straight lines drawn from a certain point within the figure to the circumference are equal to one another : 16.
Página 69 - To divide a given straight line into two parts, so that the rectangle contained by the whole, and one of the parts, may be equal to the square of the other part.