Elements of Geometry: Containing the First Six Books of Euclid, with a Supplement on the Quadrature of the Circle, and the Geometry of Solids: to which are Added, Edlemnts of Plane and Spherical TrigonometryW.E. Dean, 1836 - 311 sider |
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Resultat 1-5 av 66
Side vi
... definition , except that of EUCLID , has ever been given , from which the properties of proportionals can be deduced by rea- sonings , which , at the same time that they are per- fectly rigorous , are also simple and direct . As to the ...
... definition , except that of EUCLID , has ever been given , from which the properties of proportionals can be deduced by rea- sonings , which , at the same time that they are per- fectly rigorous , are also simple and direct . As to the ...
Side vii
... definitions in the first Book , and particularly on the definition of a straight line . A new axiom is also introduced in the room of the 12th , for the purpose of demon- strating more easily some of the properties of pa- rallel lines ...
... definitions in the first Book , and particularly on the definition of a straight line . A new axiom is also introduced in the room of the 12th , for the purpose of demon- strating more easily some of the properties of pa- rallel lines ...
Side xvi
... that had the benefit of his own superintendance , having been exhausted , this New Edition has been printed under my care . COLLEGE OF EDINBURGH , January 1822 , WILLIAM WALLACE , OF GEOMETRY . BOOK I. DEFINITIONS . : . I. xvi PREFACE .
... that had the benefit of his own superintendance , having been exhausted , this New Edition has been printed under my care . COLLEGE OF EDINBURGH , January 1822 , WILLIAM WALLACE , OF GEOMETRY . BOOK I. DEFINITIONS . : . I. xvi PREFACE .
Side 17
... DEFINITIONS . : . I. " 66 A POINT is that which has position , but not magni- See Notes . tude II . A line is length without breadth . " COROLLARY . The extremities of a line are points ; " and the intersections of one line with another ...
... DEFINITIONS . : . I. " 66 A POINT is that which has position , but not magni- See Notes . tude II . A line is length without breadth . " COROLLARY . The extremities of a line are points ; " and the intersections of one line with another ...
Side 63
... , the angle DAC is equal to the angle BAC : But DAC is a right angle ; c8 . 1 . therefore also BAČ is a right angle . Therefore , if the square , & c . Q. E. D. c E ELEMENTS OF GEOMETRY . BOOK II . DEFINITIONS . OF GEOMETRY . 63.
... , the angle DAC is equal to the angle BAC : But DAC is a right angle ; c8 . 1 . therefore also BAČ is a right angle . Therefore , if the square , & c . Q. E. D. c E ELEMENTS OF GEOMETRY . BOOK II . DEFINITIONS . OF GEOMETRY . 63.
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Vanlige uttrykk og setninger
ABC is equal ABCD altitude angle ABC angle ACB angle BAC angle EDF arch AC base BC bisected centre circle ABC circumference cosine cylinder definition demonstrated described diameter draw drawn equal angles equiangular equilateral equilateral polygon equimultiples Euclid exterior angle fore four right angles given straight line greater hypotenuse inscribed join less Let ABC Let the straight line BC magnitudes meet opposite angle parallel parallelepipeds parallelogram perpendicular polygon prism proportional proposition pyramid Q. E. D. COR Q. E. D. PROP radius ratio rectangle contained rectilineal figure remaining angle segment semicircle shewn side BC sine solid angle spherical angle spherical triangle Spherical Trigonometry straight line AC THEOR third touches the circle triangle ABC triangle DEF wherefore
Populære avsnitt
Side 58 - To a given straight line to apply a parallelogram, which shall be equal to a given triangle, and have one of its angles equal to a given rectilineal angle.
Side 26 - If two triangles have two sides of the one equal to two sides of the...
Side 46 - Wherefore, if a straight line, &c. QED PROP. XXIX. THEOR. s«e N. Ij'a straight line fall upon two parallel straight lines, it makes the alternate angles equal...
Side 74 - THEOR. //' a straight line be divided into two equal, and also into two unequal parts, the squares of the two unequal parts are together double of the square of half the line, and of the square of the line between the points of section.
Side 84 - An angle in a segment is the angle contained by two straight lines drawn from any point in the circumference of the segment to the extremities of the straight . line which is the base of the segment.
Side 411 - 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.
Side 112 - 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.
Side 118 - IF from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.
Side 54 - Parallelograms upon the same base and between the same parallels, are equal to one another.
Side 49 - If a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles; and the three interior angles of every triangle are equal to two right angles.