The Elements of Euclid: Also the Book of Euclid's Data ...cor. viz. The first six books, together with the eleventh and twelfthF. Wingrave, 1804 |
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Resultat 1-5 av 27
Side 24
... shewn that it is not equal to it ; therefore the angle BAC is greater than the angle EDF , Wherefore if two triangles , & c . Q. E. D. PROP . XXVI . THEOR . I F two triangles have two angles of one equal to twe angles of the other ...
... shewn that it is not equal to it ; therefore the angle BAC is greater than the angle EDF , Wherefore if two triangles , & c . Q. E. D. PROP . XXVI . THEOR . I F two triangles have two angles of one equal to twe angles of the other ...
Side 28
... shewn that the C angle AGK is equal to the angle GHF ; therefore also AGK is e- qual to GKD . and they are alter- B H F nate angles ; therefore AB is parallel to CD . wherefore straight lines , & c . Q. E. D. PROP . XXXI . PROB . To 10 ...
... shewn that the C angle AGK is equal to the angle GHF ; therefore also AGK is e- qual to GKD . and they are alter- B H F nate angles ; therefore AB is parallel to CD . wherefore straight lines , & c . Q. E. D. PROP . XXXI . PROB . To 10 ...
Side 61
... shewn , that no other point but F is the center ; that is , F is the center of the circle ABC . Which was to be found . COR . From this it is manifeft , that if in a circle a straight line bisect another at right angles , the center of ...
... shewn , that no other point but F is the center ; that is , F is the center of the circle ABC . Which was to be found . COR . From this it is manifeft , that if in a circle a straight line bisect another at right angles , the center of ...
Side 71
... shewn that they cannot touch on the infide in more points than one . therefore one circle , & c . Q. E. D. EQUAL PROP . XIV . THEOR . QUAL straight lines in a circle are equally distant from the center ; and thofe which are equally ...
... shewn that they cannot touch on the infide in more points than one . therefore one circle , & c . Q. E. D. EQUAL PROP . XIV . THEOR . QUAL straight lines in a circle are equally distant from the center ; and thofe which are equally ...
Side 76
... shewn , that no other is perpendicular to it be- fides FC , that is , FC is perpendi- cular to DE . Therefore if a straight D line , & c . Q. E. D. PROP . XIX . F C GE THEOR . a . 18. 3 . See N. IF Fa ftraight line touches a circle ...
... shewn , that no other is perpendicular to it be- fides FC , that is , FC is perpendi- cular to DE . Therefore if a straight D line , & c . Q. E. D. PROP . XIX . F C GE THEOR . a . 18. 3 . See N. IF Fa ftraight line touches a circle ...
Vanlige uttrykk og setninger
alfo alſo angle ABC angle BAC bafe baſe BC is equal BC is given becauſe the angle becauſe the ratio bifected Book XI cafe circle ABCD circumference cone conſtruction cylinder defcribed demonſtrated drawn EFGH equal angles equiangular equimultiples Euclid excefs faid fame multiple fame ratio fecond fegment fhall fhewn fides fides BA fimilar fince firft firſt folid angle fore fquare fquare of AC given angle given in fpecies given in magnitude given in pofition given magnitude given ratio given ſtraight line gnomon greater join lefs leſs likewife line BC muſt oppofite parallel parallelepipeds parallelogram perpendicular plane angles PROP Propofition pyramid rectangle contained rectilineal figure right angles ſame ſhall ſpace ſphere ſquare ſtraight line AB THEOR theſe thro tiple triangle ABC wherefore
Populære avsnitt
Side 157 - D ; wherefore the remaining angle at C is equal to the remaining angle at F ; Therefore the triangle ABC is equiangular to the triangle DEF. Next, let each of the angles at C, F be not less than a right angle ; the triangle ABC is also, in this case, equiangular to the triangle DEF.
Side 24 - ... be equal, each to each ; and also the third angle of the one to the third angle of the other. Let ABC, DEF be two triangles which have the angles ABC, ECA equal to the angles DEF, EFD, viz.
Side 45 - If a straight line be divided into any two parts, the rectangle contained by the whole and one of the parts, is equal to the rectangle contained by the two parts, together with the square of the aforesaid part.
Side 73 - THE straight line drawn at right angles to the diameter of a circle, from the extremity of...
Side 163 - 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.
Side 81 - ELF. Join BC, EF ; and because the circles ABC, DEF are equal, the straight lines drawn from their centres are equal: therefore the two sides BG, GC, are equal to the two EH, HF ; and the angle at G is equal to the angle at H ; therefore the base BC is equal (4.
Side 323 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Side 80 - EA : and because AD is equal to DC, and DE common to the triangles ADE, CDE, the two sides AD, DE are equal to the two CD, DE, each to each ; and the angle ADE is equal to the angle CDE, for each of them is a right angle ; therefore the base AE is equal (4.
Side 36 - 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.