Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth BooksJ. Rivington, 1765 - 464 páginas |
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Página 35
... drawn from angles lefs than two right angles , may in fome manner be for ever prolonged , yet hall they never meet together ; and ( as he thinks ) has given a demonftration thereof . But he has miftook the matter . Let us fee what he ...
... drawn from angles lefs than two right angles , may in fome manner be for ever prolonged , yet hall they never meet together ; and ( as he thinks ) has given a demonftration thereof . But he has miftook the matter . Let us fee what he ...
Página 44
... draw the right line A E parallel to the right line B C , and draw E C. Then [ by prop . 37. ] the triangle ABC is equal to the triangle EBC for they are both upon the fame base BC , and between the fame parallels B C , A E. But [ by ...
... draw the right line A E parallel to the right line B C , and draw E C. Then [ by prop . 37. ] the triangle ABC is equal to the triangle EBC for they are both upon the fame base BC , and between the fame parallels B C , A E. But [ by ...
Página 53
... drawn from the H I E B G given points C , D to any other point н taken in the right line A B. For from one of the given points , as D , [ by 12. 1. ] draw the right line D I perpendicular to A B , which conti nue out to meet CE ...
... drawn from the H I E B G given points C , D to any other point н taken in the right line A B. For from one of the given points , as D , [ by 12. 1. ] draw the right line D I perpendicular to A B , which conti nue out to meet CE ...
Página 54
... drawn from those points to any point in the given right line ; these two right lines taken together will be the leaft of all , when they make equal angles with the given right line . Which was to be demonftrated . PROP . II . THEO R ...
... drawn from those points to any point in the given right line ; these two right lines taken together will be the leaft of all , when they make equal angles with the given right line . Which was to be demonftrated . PROP . II . THEO R ...
Página 62
... drawn from the angle oppofite to the bafe upon it , and the right line bifecting that angle , will be one half the difference of the angles at the bafe . Let AFD be a triangle , whofe perpendicular , drawn F from the angle F F upon the ...
... drawn from the angle oppofite to the bafe upon it , and the right line bifecting that angle , will be one half the difference of the angles at the bafe . Let AFD be a triangle , whofe perpendicular , drawn F from the angle F F upon the ...
Otras ediciones - Ver todas
Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth Books Euclid,David Gregory Sin vista previa disponible - 2023 |
Euclid's Elements of Geometry: The First Six, the Eleventh and Twelfth Books Euclid,David Gregory Sin vista previa disponible - 2023 |
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 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
Pasajes populares
Página 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.
Página 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...
Página 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.
Página 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.
Página 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.
Página 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.
Página 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...
Página 110 - If any two points be taken in the circumference of a circle, the straight line which joins them shall fall within the circle.
Página 130 - When you have proved that the three angles of every triangle are equal to two right angles...
Página 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...