The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago Vitiated These Books, are Corrected and Some of Euclid's Demonstrations are Restored. Also, The Book of Euclid's Data, in Like Manner Corrected. viz. The first six books, together with the eleventh and twelfthA. Foulis, 1781 - 466 sider |
Inni boken
Resultat 1-5 av 29
Side
... reasons , been infufficiently demonftrated fince Theon's time hitherto . Besides , there are feveral other things , which have nothing of Euclid's accuracy , and which plainly fhew that his Elements have been much corrupted by unfkilful ...
... reasons , been infufficiently demonftrated fince Theon's time hitherto . Besides , there are feveral other things , which have nothing of Euclid's accuracy , and which plainly fhew that his Elements have been much corrupted by unfkilful ...
Side 21
... reason , the exterior angle CEB of the triangle ABE is greater than BAC . and it has been demonftrated that the angle BDC is greater than the angle . CEB ; much more then is the angle BDC greater than the angle BAC . therefore if from ...
... reason , the exterior angle CEB of the triangle ABE is greater than BAC . and it has been demonftrated that the angle BDC is greater than the angle . CEB ; much more then is the angle BDC greater than the angle BAC . therefore if from ...
Side 41
... reason , AB and AH are in the fame straight line . and because the angle DBC is equal to the angle FBA , each of them being a right angle , add to each the angle ABC , B H K d . 14. l . D L E and the whole angle DBA is - equal to the ...
... reason , AB and AH are in the fame straight line . and because the angle DBC is equal to the angle FBA , each of them being a right angle , add to each the angle ABC , B H K d . 14. l . D L E and the whole angle DBA is - equal to the ...
Side 77
... reason , the angle FEC is double of the angle EAC . therefore the whole angle BEC is double of the whole angle BAC .. Again , Let BDC be inflected to the circumference , fo that E the cen- ter of the circle be without the angle BDC ...
... reason , the angle FEC is double of the angle EAC . therefore the whole angle BEC is double of the whole angle BAC .. Again , Let BDC be inflected to the circumference , fo that E the cen- ter of the circle be without the angle BDC ...
Side 78
... reason , the angle BFD is double of the angle BED . therefore the angle BAD is equal to the angle BED . 8. 32. 3 . b . 21.3 . But if the segment BAED be not greater than a femicircle , let BAD , BED be angles in it ; thefe alfo are ...
... reason , the angle BFD is double of the angle BED . therefore the angle BAD is equal to the angle BED . 8. 32. 3 . b . 21.3 . But if the segment BAED be not greater than a femicircle , let BAD , BED be angles in it ; thefe alfo are ...
Andre utgaver - Vis alle
The Elements of Euclid, Viz: The Errors, by which Theon, Or Others, Have ... Robert Simson Uten tilgangsbegrensning - 1775 |
The Elements of Euclid: The Errors, by which Theon, Or Others, Have Long Ago ... Robert Simson Uten tilgangsbegrensning - 1762 |
The Elements of Euclid: The Errors by which Theon, Or Others, Have Long ... Robert Simson Uten tilgangsbegrensning - 1827 |
Vanlige uttrykk og setninger
AC is equal alfo alſo angle ABC angle BAC bafe baſe BC is given becauſe the angle bifected Book XI cafe circle ABCD circumference cone confequently cylinder defcribed demonftrated diameter drawn EFGH equal angles equiangular equimultiples Euclid excefs faid fame manner fame multiple fame ratio fecond fegment fhall fhewn fide BC fides fimilar fince firft firſt folid angle fome fore fquare of AC ftraight line AB given angle given ftraight line given in fpecies given in magnitude given in pofition given magnitude given ratio gnomon greater join lefs leſs likewife line BC muſt oppofite parallel parallelepipeds parallelogram perpendicular prifm Propofition proportionals pyramid rectangle contained rectilineal figure right angles ſhall ſphere ſquare thefe THEOR theſe thro tiple triangle ABC vertex wherefore
Populære avsnitt
Side 156 - 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 3 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Side 323 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Side 92 - If from a point without a circle there be drawn two straight lines, one of which cuts the circle, and the other meets it ; if the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, be equal to the square- of the line which meets it, the line which meets shall touch the circle.
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 52 - If a straight line be bisected, and produced to any point, the square of the whole line thus produced, and the square of the part of it produced, are together double of the square of half the line bisected, and of the square of the line made up of the half and the part produced.
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.
Side 2 - When a straight line standing on another straight line makes the adjacent angles equal to one another, each of the angles is called a right angle; and the straight line which stands on the other is called a perpendicular to it.
Side 54 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.
Side 74 - The straight line drawn at right angles to the diameter of a circle, from the extremity of it, falls without the circle...