Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth Books |
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Página 1
+ E RRÀ T A. À Page 3. line 41. for Def . 5. r . Def . ... 1.9 . for right - angled , r . right - lined . P. 127. ... Figure . P. 451. l . 18 . 1. for solid fimilar , r . fimilar solid . P. 441. at the Top , for Book III . r . Book VI .
+ E RRÀ T A. À Page 3. line 41. for Def . 5. r . Def . ... 1.9 . for right - angled , r . right - lined . P. 127. ... Figure . P. 451. l . 18 . 1. for solid fimilar , r . fimilar solid . P. 441. at the Top , for Book III . r . Book VI .
Página 3
A right line is that which lies evenly between its points 5. ... The bounds of a superficies are lines a It may perhaps be as well to say , A point is that which is less than any affignable or ... Of three - sided figures , that is B 7.
A right line is that which lies evenly between its points 5. ... The bounds of a superficies are lines a It may perhaps be as well to say , A point is that which is less than any affignable or ... Of three - sided figures , that is B 7.
Página 4
33. That a rhomboides , whose opposite sides and angles are equal , but is neither equal - fided nor right - angled 9 . 34. All four - fided figures besides these may be called trapeziunis . 35. Parallels are right lines , which being ...
33. That a rhomboides , whose opposite sides and angles are equal , but is neither equal - fided nor right - angled 9 . 34. All four - fided figures besides these may be called trapeziunis . 35. Parallels are right lines , which being ...
Página 12
Therefore the angles at the base of iosceles triangles are equal to one another , and the equal right lines being ... case of the 24th proposition , when the point p ( see the figure of that propofition ) falls within the triangle EDG .
Therefore the angles at the base of iosceles triangles are equal to one another , and the equal right lines being ... case of the 24th proposition , when the point p ( see the figure of that propofition ) falls within the triangle EDG .
Página 39
And because the right line Bc , falling upon the two right lines AC , BD , makes the alternate angles ACB , CBD equal ... The opposite sides and angles of any parallelogram or figure bounded by parallel lines , are equal to one another ...
And because the right line Bc , falling upon the two right lines AC , BD , makes the alternate angles ACB , CBD equal ... The opposite sides and angles of any parallelogram or figure bounded by parallel lines , are equal to one another ...
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Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth Books Euclid,David Gregory Sin vista previa disponible - 2016 |
Términos y frases comunes
A B C ABCD added alſo altitude baſe becauſe centre circle circumference common cone continue cylinder definition demonſtrated deſcribed diameter difference divided double draw drawn equal equal angles equiangular equimultiples Euclid exceeds fall fame fides figure firſt folid fore four fourth given right line greater half inſcribed join leſs magnitudes manner meet multiple oppoſite parallel parallelogram perpendicular plane polygon priſms PROP proportional propoſition proved pyramid ratio rectangle remaining angle right angles right line A B right lined figure ſame ſay ſecond ſegment ſhall ſides ſimilar ſince ſolid ſome ſphere ſquare ſtand ſum taken THEOR theſe third thoſe thro touch triangle triangle ABC twice vertex Wherefore whole whoſe baſe
Pasajes populares
Página 245 - 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 28 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz. either the sides adjacent to the equal...
Página 246 - But it was proved that the angle AGB is equal to the angle at F ; therefore the angle at F is greater than a right angle : But by the hypothesis, it is less than a right angle ; which is absurd.
Página 16 - When a straight line set up on a straight line makes the adjacent angles equal to one another, each of the equal angles is right, and the straight line standing on the other is called a perpendicular to that on which it stands.
Página 30 - Let the straight line EF, which falls upon the two straight lines AB, CD, make the alternate angles AEF, EFD equal to one another; AB is parallel to CD.
Página 54 - 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 389 - KL: but the cylinder CM is equal to the cylinder EB, and the axis LN to the axis GH; therefore as the cylinder EB to...
Página 108 - If any two points be taken in the circumference of a circle, the straight line which joins them shall fall within the circle.
Página 128 - When you have proved that the three angles of every triangle are equal to two right angles...
Página 181 - FK : in the same manner it may be demonstrated, that FL, FM, FG are each of them equal to FH, or FK : therefore the five straight lines FG, FH, FK, FL, FM are equal to one another : wherefore the circle described from the centre F, at the distance of...