The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh and Twelfth |
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Σελίδα 275
Let there be two spheres about the same centre A ; it is required to describe in
the greater a solid polyhedron , the superficies of which shall not meet the less
sphere . Let the spheres be cut by a plane passing through the centres ; the
common ...
Let there be two spheres about the same centre A ; it is required to describe in
the greater a solid polyhedron , the superficies of which shall not meet the less
sphere . Let the spheres be cut by a plane passing through the centres ; the
common ...
Σελίδα 280
Therefore in the greater of two spheres , which have the same centre , a solid
polyhedron is described , the superficies of ... And if in the less sphere there be
described a solid polyhedron , by drawing straight lines betwixt the points in
which ...
Therefore in the greater of two spheres , which have the same centre , a solid
polyhedron is described , the superficies of ... And if in the less sphere there be
described a solid polyhedron , by drawing straight lines betwixt the points in
which ...
Σελίδα 281
Therefore the pyramid of which the base is the quadrilateral KBOS , and vertex A
, has to the pyramid in the other sphere of the same order , the triplicate ratio of
their homologous sides ; that is , of that ratio which AB from the centre of the ...
Therefore the pyramid of which the base is the quadrilateral KBOS , and vertex A
, has to the pyramid in the other sphere of the same order , the triplicate ratio of
their homologous sides ; that is , of that ratio which AB from the centre of the ...
Σελίδα 282
Book XU . sphere DEF : But the sphere ABC is greater than the solid polyhedron
in it ; therefore also the sphere GHK is greater c 14. 5 . than the solid polyhedron
in the sphere DEF : But it is also less , because it is contained within it , which is ...
Book XU . sphere DEF : But the sphere ABC is greater than the solid polyhedron
in it ; therefore also the sphere GHK is greater c 14. 5 . than the solid polyhedron
in the sphere DEF : But it is also less , because it is contained within it , which is ...
Σελίδα 483
SPHERICAL TRIGONOMETRY . DEFINITIONS . I. The pole of a circle of the
sphere is a point in the superficies of the sphere , from which all straight lines
drawn to the circumference of the circle are equal . II . A great circle of the sphere
is any ...
SPHERICAL TRIGONOMETRY . DEFINITIONS . I. The pole of a circle of the
sphere is a point in the superficies of the sphere , from which all straight lines
drawn to the circumference of the circle are equal . II . A great circle of the sphere
is any ...
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The Elements Of Euclid: Viz. The First Six Books, Together With The Eleventh ... Robert Simson,Euclid,John Davidson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2019 |
The Elements Of Euclid: Viz. The First Six Books, Together With The Eleventh ... Robert Simson,Euclid,John Davidson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2019 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD added altitude angle ABC angle BAC arch base Book Book XI centre circle circle ABC circumference common cone cylinder definition demonstrated described diameter difference divided double draw drawn equal equiangular equimultiples excess fore four fourth given angle given in position given in species given magnitude given ratio given straight line greater Greek half join less likewise magnitude manner meet multiple opposite parallel parallelogram pass perpendicular plane prism produced PROP proportionals proposition pyramid Q. E. D. PROP radius reason rectangle rectangle contained remaining right angles segment shown sides similar sine solid solid angle sphere square square of AC taken THEOR third triangle ABC wherefore whole
Δημοφιλή αποσπάσματα
Σελίδα 47 - If a straight line be bisected and produced to any point, the rectangle contained by the whole line thus produced and the part of it produced, together with the square of half the line bisected, is equal to the square of the straight line which is made up of the half and the part produced. Let the straight line AB be bisected in C, and produced to D : the rectangle AD, DB, together with the square of CB, shall be equal to the square of CD.
Σελίδα 306 - Again ; the mathematical postulate, that " things which are equal to the same are equal to one another," is similar to the form of the syllogism in logic, which unites things agreeing in the middle term.
Σελίδα 26 - if a straight line," &c. QED PROP. XXIX. THEOR. See the Jf a straight line fall upon two parallel straight ti?isepropo- lines, it makes the alternate angles equal to one another ; and the exterior angle equal to the interior and opposite upon the same side ; and likewise the two interior angles upon the same side together equal to two right angles.
Σελίδα 54 - In every triangle, the square on the side subtending either of the acute angles, is less than the squares on the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the...
Σελίδα 170 - EQUIANGULAR parallelograms have to one another the ratio which is compounded of the ratios of their sides.* Let AC, CF be equiangular parallelograms, having the angle BCD equal to the angle ECG : the ratio of the parallelogram AC to the parallelogram CF, is the same with the ratio which is compounded of the ratios of their sides. • See Note. Let BG, CG, be placed in a straight line ; therefore DC and CE are also in a straight line (14.
Σελίδα 153 - 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.
Σελίδα 30 - And because the angle ABC is equal to the angle BCD, and the angle CBD to the angle ACB...
Σελίδα 28 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Σελίδα 64 - ... than the more remote: but of those which fall upon the convex circumference, the least is that between the point without the circle and the diameter; and, of the rest, that which is nearer to the least is always less than the more remote: and only two equal straight lines can be drawn from the point into the circumference, one upon each side of the least.
Σελίδα 5 - If a straight line meet two straight lines, so as to make the two interior angles on the same side of it taken together less than two right angles...