Elements of Geometry: Containing the Principal Propositions in the First Six, and the Eleventh and Twelfth Books of EuclidJ. Johnson, 1789 - 272 páginas |
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Página viii
... information of young students , and ought to be carefully confulted by those who wish to obtain a juft idea of the science , and the principles upon which it is founded . THE ELEMENTS O F GEOMETRY . воок I. DEFINITIONS . ELE- viii PREFACE .
... information of young students , and ought to be carefully confulted by those who wish to obtain a juft idea of the science , and the principles upon which it is founded . THE ELEMENTS O F GEOMETRY . воок I. DEFINITIONS . ELE- viii PREFACE .
Página 14
... VIII . THEOREM . All right angles are equal to each other . C G B H D E . Let ABC , DEF be each of them right angles ; then will ABC be equal to DEF . For conceive the angle DEF to be applied to the angle ABC , so that the point E may ...
... VIII . THEOREM . All right angles are equal to each other . C G B H D E . Let ABC , DEF be each of them right angles ; then will ABC be equal to DEF . For conceive the angle DEF to be applied to the angle ABC , so that the point E may ...
Página 54
... VIII . THEOREM . The rectangles contained under a given line and the several parts of another line , any how divided , are , together , equal to the rectangle of the two whole lines , F H I D E Let A and BC be two right lines , one of ...
... VIII . THEOREM . The rectangles contained under a given line and the several parts of another line , any how divided , are , together , equal to the rectangle of the two whole lines , F H I D E Let A and BC be two right lines , one of ...
Página 82
... ; which is abfurd . The point c , therefore , cannot be the centre of the circle BDF ; and the fame may be fhewn of any other point out of the line AF . Q. E. D. PROP . VIII . THEOREM . Any two chords in PROP . 82 ELEMENTS OF GEOMETRY .
... ; which is abfurd . The point c , therefore , cannot be the centre of the circle BDF ; and the fame may be fhewn of any other point out of the line AF . Q. E. D. PROP . VIII . THEOREM . Any two chords in PROP . 82 ELEMENTS OF GEOMETRY .
Página 83
... VIII . THEOREM . Any two chords in a circle , which are equally distant from the centre , are equal to each other ; and if they be equal to each other , they will be equally diftant from the centre . E Let ABED be a circle , whofe ...
... VIII . THEOREM . Any two chords in a circle , which are equally distant from the centre , are equal to each other ; and if they be equal to each other , they will be equally diftant from the centre . E Let ABED be a circle , whofe ...
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Elements of Geometry: Containing the Principal Propositions in the First Six ... Euclid,John Bonnycastle Sin vista previa disponible - 2016 |
Términos y frases comunes
ABCD AC is equal alfo equal alſo be equal alſo be greater altitude angle ABC angle ACB angle BAC angle CAB angle DAF bafe baſe becauſe bifect cafe centre chord circle ABC circumference Conft defcribe demonftration diagonal diameter diſtance draw EFGH equiangular equimultiples EUCLID fame manner fame multiple fame plane fame ratio fecond fection fegment fhewn fide AB fide AC fimilar fince the angles folid fome fquares of AC ftand given circle given right line infcribed interfect join the points lefs leſs Let ABC magnitudes muſt oppofite angles outward angle parallelepipedons parallelogram perpendicular polygon prifm propofition proportional Q. E. D. PROP reafon rectangle of AB rectangle of AC remaining angle right angles SCHOLIUM ſhall ſpace ſquare tangent THEOREM theſe thofe thoſe triangle ABC twice the rectangle whence
Pasajes populares
Página 166 - 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.
Página 73 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 215 - Lemma, if from the greater of two unequal magnitudes there be taken more than its half, and from the remainder more than its half, and so on, there shall at length remain a magnitude less than the least of the proposed magnitudes.
Página 117 - In a given circle to inscribe a triangle equiangular to a given triangle. Let ABC be the given circle, and DEF the given triangle ; it is required to inscribe in the circle ABC a triangle equiangular to the triangle DEF. Draw the straight line GAH touching the circle in the point A (III. 17), and at the point A, in the straight line AH, make the angle HAG equal to the angle DEF (I.
Página 18 - To draw a straight line perpendicular to a given straight line of an unlimited length, from a given point without it. LET ab be the given straight line, which may be produced to any length both ways, and let c be a point without it. It is required to draw a straight line perpendicular to ab from the point c.
Página 249 - A plane rectilineal angle is the inclination of two straight lines to one another, which meet together, but are not in the same straight line.
Página 102 - To bisect a given arc, that is, to divide it into two equal parts. Let ADB be the given arc : it is required to bisect it.
Página i - Handbook to the First London BA Examination. Lie (Jonas). SECOND SIGHT; OR, SKETCHES FROM NORDLAND. By JONAS LIE. Translated from the Norwegian. [/» preparation. Euclid. THE ENUNCIATIONS AND COROLLARIES of the Propositions in the First Six and the Eleventh and Twelfth Books of Euclid's Elements.
Página 5 - AXIOM is a self-evident truth ; such as, — 1. Things which are equal to the same thing, are equal to each other. 2. If equals be added to equals, the sums will be equal. 3. If equals be taken from equals, the remainders will be equal. 4. If equals be added to unequals, the sums will be unequal.
Página 145 - F is greater than E; and if equal, equal; and if less, less. But F is any multiple whatever of C, and D and E are any equimultiples whatever of A and B; [Construction.