The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh and Twelfth ... Also the Book of Euclid's Data, in Like Manner Corrected |
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Page 14
1. to the base e DB , and the straight line AB is divided into two equal parts in A the point D. Which was to be done . PROP . XI . PROB . * 3. I. To draw a straight line at right angles to a given straight line , from a given point in ...
1. to the base e DB , and the straight line AB is divided into two equal parts in A the point D. Which was to be done . PROP . XI . PROB . * 3. I. To draw a straight line at right angles to a given straight line , from a given point in ...
Page 29
For any rectilineal figure ABCDE , can be divided into as many triangles as the figure has sides , by drawing straight lines A from a point F within the figure to b 29. 1 . c 13. 1 . 9 15. 1 . Boor I. each of its angles OF EUCLID . 29.
For any rectilineal figure ABCDE , can be divided into as many triangles as the figure has sides , by drawing straight lines A from a point F within the figure to b 29. 1 . c 13. 1 . 9 15. 1 . Boor I. each of its angles OF EUCLID . 29.
Page 43
I. THEOR , If there be two straight lines , one of which is divided into any number of parts ; the rectangle contained by the two straight lines , is equal to the rectangles contained by the undivided line , and the several parts of the ...
I. THEOR , If there be two straight lines , one of which is divided into any number of parts ; the rectangle contained by the two straight lines , is equal to the rectangles contained by the undivided line , and the several parts of the ...
Page 44
Let A and BC be two straight lines ; and let BC be divided into any parts in the points D , E ; the rectangle contained by the straight lines A , B D BC is equal to the rectangle contained by A , BD , together with that contained by A ...
Let A and BC be two straight lines ; and let BC be divided into any parts in the points D , E ; the rectangle contained by the straight lines A , B D BC is equal to the rectangle contained by A , BD , together with that contained by A ...
Page 45
Ir 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 .
Ir 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 .
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ABCD added altitude angle ABC angle BAC base Book centre circle circle ABC circumference common cone contained cylinder definition demonstrated described diameter difference divided double draw drawn Edition equal equiangular equimultiples excess fore four fourth given angle given in magnitude given in position given in species given magnitude given ratio given straight line greater Greek half join less likewise logarithm magnitude manner meet multiple opposite parallel parallelogram pass perpendicular plane Price produced PROP proportionals proposition proved pyramid radius reason rectangle rectangle contained remaining right angles segment shown sides similar sine solid solid angle space sphere square square of BC Take taken THEOR third triangle ABC wherefore whole
Popular passages
Page 41 - If a straight line be divided into any two parts, the square of the whole line is equal to the squares of the two parts, together with twice the rectangle contained by the parts.
Page 180 - Wherefore, in equal circles &c. QED PROPOSITION B. THEOREM If the vertical angle of a triangle be bisected by a straight line which likewise cuts the base, the rectangle contained by the sides of the triangle is equal to the rectangle contained by the segments of the base, together with the square on the straight line which bisects the angle.
Page 166 - 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 •f the ratios of their sides. DH Let BC, CG be placed in a straight line ; therefore DC and CE are also in a straight line (14.
Page 2 - A rhomboid, is that which has its opposite sides equal to one another, but all its sides are not equal, nor its angles right angles.
Page 105 - The first of four magnitudes is said to have the same ratio to the second, which the third has to the fourth, when any equimultiples whatsoever of the first and third being taken, and any equimultiples whatsoever of the second and fourth ; if the multiple of the first be less than that of the second, the multiple of the third is also less than that of the fourth...
Page 79 - The angle in a semicircle is a right angle; the angle in a segment greater than a semicircle is less than a right angle; and the angle in a segment less than a semicircle is greater than a right angle.
Page 1 - A straight line is that which lies evenly between its extreme points.
Page 149 - 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.
Page 23 - That, if a straight line falling on two straight lines make the interior angles on the same side less than two right angles, the two straight lines, if produced indefinitely, meet on that side on which are the angles less than the two right angles.
Page 83 - Wherefore from the given circle ABC has been cut off the segment BAC, containing an angle equal to the given angle DQEP PROP. XXXV. THEOR. If two straight lines within a circle cut one another, the rectangle contained by the segments of one of them is equal to the rectangle contained by the segments of the other. Let the...
Bibliographic information
| Title | The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh and Twelfth ... Also the Book of Euclid's Data, in Like Manner Corrected |
| Author | Euclides |
| Editor | Robert Simson |
| Edition | 17 |
| Publisher | Wingrave and Collingwood, 1816 |
| Original from | the Complutense University of Madrid |
| Digitized | 20 May 2008 |
| Length | 528 pages |
| Export Citation | BiBTeX EndNote RefMan |