Euclid's Elements of Geometry, Libros 1-6Henry Martyn Taylor The University Press, 1893 - 504 páginas |
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Página vii
... magnitudes of all kinds ( for instance " things which are equal to the same thing are equal to one another ” ) , and to use the term postulate for a simple geometrical proposi- tion , whose truth we assume . When a child is told that A ...
... magnitudes of all kinds ( for instance " things which are equal to the same thing are equal to one another ” ) , and to use the term postulate for a simple geometrical proposi- tion , whose truth we assume . When a child is told that A ...
Página xii
... magnitudes . The method commonly used of representing the magni- tudes under discussion by straight lines has been discarded as tending to mislead the student with respect to the general nature of the theorems of Book V , which are ...
... magnitudes . The method commonly used of representing the magni- tudes under discussion by straight lines has been discarded as tending to mislead the student with respect to the general nature of the theorems of Book V , which are ...
Página 2
... magnitude , that it answers to the geometrical definition of a point . A point is generally denoted by a single letter of the alphabet : for instance we speak of the point A. DEFINITION 2. That which has position and length but neither ...
... magnitude , that it answers to the geometrical definition of a point . A point is generally denoted by a single letter of the alphabet : for instance we speak of the point A. DEFINITION 2. That which has position and length but neither ...
Página 7
... magnitude of the angle is not affected by the length of the straight lines AB , AC . The point A , where the two straight lines AB and AC , which form the angle BAC , meet , is called the vertex of the angle BAC . If there be only two ...
... magnitude of the angle is not affected by the length of the straight lines AB , AC . The point A , where the two straight lines AB and AC , which form the angle BAC , meet , is called the vertex of the angle BAC . If there be only two ...
Página 7
... magnitude of the angle between the two positions of the line . For instance each hand of a watch , as long as the ... magnitudes less than two right angles . ( See Def . 11. ) Addition of Angles . If three straight lines AB , AC , AD ...
... magnitude of the angle between the two positions of the line . For instance each hand of a watch , as long as the ... magnitudes less than two right angles . ( See Def . 11. ) Addition of Angles . If three straight lines AB , AC , AD ...
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Términos y frases comunes
ABCD AC is equal ADDITIONAL PROPOSITION angle ACB angle BAC angles ABC anharmonic arc ABC bisected centre of similitude chord circle ABC coincide Constr Coroll cut the circle describe a circle diagonal diameter draw equal angles equal circles equal to CD equiangular equimultiples Euclid EXERCISES exterior angle given circle given point given straight line given triangle greater harmonic range hypotenuse inscribed intersect Let ABC meet middle points opposite sides pair parallel parallelogram pencil pentagon perpendicular polygon PROOF Prop PROPOSITION 14 Ptolemy's Theorem quadrilateral radical axis radius rectangle contained required to prove respectively rhombus right angles shew sides BC Similarly square on AC straight line &c straight line drawn straight line joining subtend tangent theorem triangle ABC triangle DEF triangles are equal twice the rectangle vertices Wherefore
Pasajes populares
Página 59 - Any two sides of a triangle are together greater than the third side.
Página 7 - An angle less than a right angle is called an acute angle; an angle greater than a right angle and less than two right angles is called an obtuse angle.
Página 68 - If two triangles have two angles of the one equal to two angles of the other, each to each, and one side equal to one side, viz.
Página 144 - 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...
Página 376 - To find a mean proportional between two given straight lines. Let AB, BC be the two given straight lines ; it is required to find a mean proportional between them. Place AB, BC in a straight line, and upon AC describe the semicircle ADC, and from the point B draw (9.
Página 135 - 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 divided line.
Página 76 - ... the same side together equal to two right angles ; the two straight lines shall be parallel to one another.
Página 305 - To inscribe, an equilateral and equiangular pentagon in a given circle. Let ABCDE be the given circle. It is required to inscribe an equilateral...
Página 424 - PROPOSITION 5. The locus of a point, the ratio of whose distances from two given points is constant, is a circle*.
Página 248 - 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 two straight lines AC, BD, within the circle ABCD, cut one another in the point E : the rectangle contained by AE, EC is equal to the rectangle contained by BE, ED.