The first six books of the Elements of Euclid, with numerous exercisesIngram, Cooke, 1853 - 147 páginas |
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Página 4
... triangle upon a given finite straight line . LET ab be the given straight line ; it is required to describe an ... abc shall be an equilateral triangle . Because the point a is the centre of the circle bcd , ac is equal ( 15 def ...
... triangle upon a given finite straight line . LET ab be the given straight line ; it is required to describe an ... abc shall be an equilateral triangle . Because the point a is the centre of the circle bcd , ac is equal ( 15 def ...
Página 5
... abc is therefore equilateral , and it is described upon the given straight line a b . Which was to be done ... triangle da b , and produce ( 2 post . ) the straight lines da , db , to e and f ; from the centre b , at the distance ...
... abc is therefore equilateral , and it is described upon the given straight line a b . Which was to be done ... triangle da b , and produce ( 2 post . ) the straight lines da , db , to e and f ; from the centre b , at the distance ...
Página 6
... abc , def be two triangles , which have the two sides a b , ac equal to the two sides de , df , each to each , viz ... triangle abc to the triangle def ; and the other angles to which the equal sides are opposite , shall be equal ...
... abc , def be two triangles , which have the two sides a b , ac equal to the two sides de , df , each to each , viz ... triangle abc to the triangle def ; and the other angles to which the equal sides are opposite , shall be equal ...
Página 7
... abc is therefore equal to the remaining angle a cb , which are the angles at the base of the triangle a b c and it has also been proved that the angle fbc is equal to the angle gcb , which are the angles upon the other side of the base ...
... abc is therefore equal to the remaining angle a cb , which are the angles at the base of the triangle a b c and it has also been proved that the angle fbc is equal to the angle gcb , which are the angles upon the other side of the base ...
Página 8
... triangles a c b , a d b , upon the same base a b , and upon the same ... triangle , because ac is equal to a d , the angle a cd is equal ( i . 5 ) to ... abc , def be two triangles , having the two sides a b , ac , equal to the ...
... triangles a c b , a d b , upon the same base a b , and upon the same ... triangle , because ac is equal to a d , the angle a cd is equal ( i . 5 ) to ... abc , def be two triangles , having the two sides a b , ac , equal to the ...
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Términos y frases comunes
a b c abcd adjacent angles angle a cb angle abc angle bac angle edf angle equal base bc bc is equal bisected centre circle abc circumference bc describe diameter double draw equal angles equal straight lines equal to f equimultiples ex æquali exterior angle fore four magnitudes fourth given circle given straight line gnomon greater ratio greater than f inscribe less LET abc LET the straight likewise multiple opposite angle parallel parallelogram perpendicular produced Q. E. D. PROPOSITION rectangle a d rectangle contained remaining angle right angles segment semicircle shewn square of a c straight line a b straight line ab straight line bc tiple touches the circle triangle abc triangle def twice the rectangle