Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth BooksJ. Rivington, 1765 - 464 Seiten |
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Seite 4
... right - angled triangle , which has a right angle . 28. That an obtufe - angled triangle , which has an obtuse angle . 29. And that an acute - angled triangle , which has three acute angles . 30. Amongft four - fided figures , that is a ...
... right - angled triangle , which has a right angle . 28. That an obtufe - angled triangle , which has an obtuse angle . 29. And that an acute - angled triangle , which has three acute angles . 30. Amongft four - fided figures , that is a ...
Seite 6
... angles are lefs than two right angles ' , 12. Two right lines do not comprehend a space . Α c E F t All these axioms are fo evident , when the words by which they are declared are underfood , that no body can even deny their truth if he ...
... angles are lefs than two right angles ' , 12. Two right lines do not comprehend a space . Α c E F t All these axioms are fo evident , when the words by which they are declared are underfood , that no body can even deny their truth if he ...
Seite 17
... right line into two equal parts v . Let A B be the given finite right line , which is to be cut into two equal parts ... angles of each of thefe triangles , which are oppofite to the given right line A B , by a right line , which will ...
... right line into two equal parts v . Let A B be the given finite right line , which is to be cut into two equal parts ... angles of each of thefe triangles , which are oppofite to the given right line A B , by a right line , which will ...
Seite 18
... angle C G H is equal to the angle EHC [ by prop . 8. ] ; and these are adjacent angles . But when a right line ftanding upon a right line makes the adjacent angles equal to one another , each of the equal angles is a right angle , and the ...
... angle C G H is equal to the angle EHC [ by prop . 8. ] ; and these are adjacent angles . But when a right line ftanding upon a right line makes the adjacent angles equal to one another , each of the equal angles is a right angle , and the ...
Seite 19
... right line A B , from a given point c without it , is drawn the perpendicular C H to it . Which was to be done . It ... angles fhall either be two right angles , or [ both together ] equal to two right angles & . For let any right line ...
... right line A B , from a given point c without it , is drawn the perpendicular C H to it . Which was to be done . It ... angles fhall either be two right angles , or [ both together ] equal to two right angles & . For let any right line ...
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Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth Books Euclid,David Gregory Keine Leseprobe verfügbar - 2023 |
Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth Books Euclid,David Gregory Keine Leseprobe verfügbar - 2023 |
Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth Books Euclid,David Gregory Keine Leseprobe verfügbar - 2016 |
Häufige Begriffe und Wortgruppen
A B C D alfo alſo angle ABC becauſe the angle bifected centre circle A B C circumference cone confequent cylinder defcribed demonftrated diameter equal angles equiangular equimultiples Euclid EUCLID's ELEMENTS fame altitude fame multiple fame ratio fame reafon fecond fegment femidiameter fhall fides A B fimilar fince firft firſt fixth folid angle folid parallelepipedon fome fphere ftand given circle given right line given triangle greater infcribed interfect join leffer lefs leſs parallel parallelogram perpendicular polygon prifm PROP propofition proportional pyramid rectangle contained regular polygon remaining angle right angles right line A B right lined figure right-lined SCHOLIUM ſquare thefe THEOR theſe thofe thoſe trapezium triangle ABC twice the fquare vertex the point Wherefore whofe bafe whoſe baſe
Beliebte Passagen
Seite 247 - 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.
Seite 30 - 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...
Seite 248 - 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.
Seite 18 - 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.
Seite 32 - 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.
Seite 56 - 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.
Seite 391 - 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...
Seite 110 - If any two points be taken in the circumference of a circle, the straight line which joins them shall fall within the circle.
Seite 130 - When you have proved that the three angles of every triangle are equal to two right angles...
Seite 183 - 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...