The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh and Twelfth |
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Σελίδα 44
If a straight line be divided into any two parts , the rectangle contained ty the
whole and one of the parts , is equal to the rectangle contained by the two parts ,
together with the square of the foresaid part . a 46. 1 . b b 31. 1 . Let the straight
line ...
If a straight line be divided into any two parts , the rectangle contained ty the
whole and one of the parts , is equal to the rectangle contained by the two parts ,
together with the square of the foresaid part . a 46. 1 . b b 31. 1 . Let the straight
line ...
Σελίδα 157
To divide a given straight line similarly to a given divided straight line , that is ,
into parts that shall have the same ratios to one another which the parts of the
divided given straight line have . Let AB be the straight line given to be divided ,
and ...
To divide a given straight line similarly to a given divided straight line , that is ,
into parts that shall have the same ratios to one another which the parts of the
divided given straight line have . Let AB be the straight line given to be divided ,
and ...
Σελίδα 249
If there be two pyramids of the same altitude , upon See N. triangular bases , and
each of them be divided into two equal pyramids , similar to the whole pyramid ,
and also into two equal prisms ; and if each of these pyramids be divided in the ...
If there be two pyramids of the same altitude , upon See N. triangular bases , and
each of them be divided into two equal pyramids , similar to the whole pyramid ,
and also into two equal prisms ; and if each of these pyramids be divided in the ...
Σελίδα 296
This proposition is divided into three cases , of which two have the same
construction and demonstration ; therefore it is now divided only into two cases .
PROP . XXXIII . B. III . This also in the Greek is divided into three cases , of which
two , viz ...
This proposition is divided into three cases , of which two have the same
construction and demonstration ; therefore it is now divided only into two cases .
PROP . XXXIII . B. III . This also in the Greek is divided into three cases , of which
two , viz ...
Σελίδα 389
Rectilineal figures given in species , are divided into triangles which are given in
species . Let the rectilineal figure ABCDE be given in species : ABCDE may be
divided into triangles given in species . Join BE , BD ; and because ABCDE is ...
Rectilineal figures given in species , are divided into triangles which are given in
species . Let the rectilineal figure ABCDE be given in species : ABCDE may be
divided into triangles given in species . Join BE , BD ; and because ABCDE is ...
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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...