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, Elements of Plane and Spherical TrigonometryCollins and Hannay, 1833 - 333 sider |
Inni boken
Resultat 1-5 av 42
Side 44
... ABCD is equal to the parallelogram EBCF . If the sides AD , DF of the paral- lelograms ABCD , DBCF opposite to the base BC be terminated in the same point D ; it is plain that each of the parallelograms is double ( 34. 1. ) of the ...
... ABCD is equal to the parallelogram EBCF . If the sides AD , DF of the paral- lelograms ABCD , DBCF opposite to the base BC be terminated in the same point D ; it is plain that each of the parallelograms is double ( 34. 1. ) of the ...
Side 45
... ABCD is equal to the parallelogram EBCF . Therefore , parallelograms upon the same base , & c . Q. E. D. PROP . XXXVI . THEOR . Parallelograms upon equal bases , and between the same parallels , are equal to one another . A DE H Let ABCD ...
... ABCD is equal to the parallelogram EBCF . Therefore , parallelograms upon the same base , & c . Q. E. D. PROP . XXXVI . THEOR . Parallelograms upon equal bases , and between the same parallels , are equal to one another . A DE H Let ABCD ...
Side 47
... ABCD and the triangle EBC be upon the same base BC and between the same pa- rallels BC , AE ; the parallelogram ABCD A is double of the triangle EBC . Join AC ; then the triangle ABC is equal ( 37. 1. ) to the triangle EBC , because ...
... ABCD and the triangle EBC be upon the same base BC and between the same pa- rallels BC , AE ; the parallelogram ABCD A is double of the triangle EBC . Join AC ; then the triangle ABC is equal ( 37. 1. ) to the triangle EBC , because ...
Side 48
... ABCD , and are there- fore called the complements ; The E complement BK is equal to the com- plement KD . Because ABCD is a parallelogram and AC its diameter , the triangle ABC is equal ( 34. 1. ) to the triangle ADC ; And because EKHA ...
... ABCD , and are there- fore called the complements ; The E complement BK is equal to the com- plement KD . Because ABCD is a parallelogram and AC its diameter , the triangle ABC is equal ( 34. 1. ) to the triangle ADC ; And because EKHA ...
Side 49
... ABCD be the given rectilineal figure , and E the given rectili- neal angle . It is required to describe a parallelogram equal to ABCD , and having an angle equal to E. Join DB , and describe ( 42. 1. ) the 7 OF GEOMETRY . BOOK I. 49.
... ABCD be the given rectilineal figure , and E the given rectili- neal angle . It is required to describe a parallelogram equal to ABCD , and having an angle equal to E. Join DB , and describe ( 42. 1. ) the 7 OF GEOMETRY . BOOK I. 49.
Andre utgaver - Vis alle
Elements of Geometry: Containing the First Six Books of Euclid: With a ... John Playfair Uten tilgangsbegrensning - 1819 |
Elements of Geometry: Containing the First Six Books of Euclid : with a ... John Playfair Uten tilgangsbegrensning - 1837 |
Elements of Geometry: Containing the First Six Books of Euclid: With a ... John Playfair Uten tilgangsbegrensning - 1854 |
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 demonstrated diameter draw 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 parallelogram perpendicular polygon prism PROB produced proportional proposition Q. E. D. COR Q. E. D. PROP radius ratio rectangle contained rectilineal figure remaining angle segment semicircle shewn side BC sine solid angle solid parallelopipeds spherical angle spherical triangle SPHERICAL TRIGONOMETRY straight line AC THEOR third touches the circle triangle ABC triangle DEF wherefore
Populære avsnitt
Side 49 - PROB. jf 0 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, Let AB be the given straight line, and C the given triangle, and D the given rectilineal angle.
Side 29 - The angles which one straight line makes with another upon one tide of it, are either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two right angles, or are together equal to two right angles. For, if the angle CBA be equal to ABD, each of them is a right angle (Def.
Side 19 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Side 55 - If 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.
Side 90 - 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 86 - 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 87 - If a straight line touch a circle, and from the point of contact a straight line be drawn cutting the circle, the angles made by this line with the line touching the circle shall be equal to the angles which are in the alternate segments of the circle.
Side 43 - THE straight lines which join the extremities of two equal and parallel straight lines, towards the same parts, are also themselves equal and parallel.
Side 39 - Wherefore, if a straight line, &c. QED PROP. XXIX. THEOR. If a straight line fall upon two parallel straight lines, it makes the alter' male 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.
Side 54 - 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. Let...