Elements of geometry, containing books i. to vi.and portions of books xi. and xii. of Euclid, with exercises and notes, by J.H. SmithRivingtons, 1876 - 349 páginas |
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Página 7
... distance from that centre . IV . That all right angles are equal to one another . V. That two straight lines cannot ... distances . Post . IV . and v . refer to simple geometrical facts , which Euclid desires to take for granted . Post ...
... distance from that centre . IV . That all right angles are equal to one another . V. That two straight lines cannot ... distances . Post . IV . and v . refer to simple geometrical facts , which Euclid desires to take for granted . Post ...
Página 10
... distance AB describe o BCD . With centre B and distance BA describe o ACE . Post . 3 . Post . 3 . From the pt . C , in which the Os cut one another , draw the st . lines CA , CB . Post . 1 . Then will ABC be an equilat . △ . For A is ...
... distance AB describe o BCD . With centre B and distance BA describe o ACE . Post . 3 . Post . 3 . From the pt . C , in which the Os cut one another , draw the st . lines CA , CB . Post . 1 . Then will ABC be an equilat . △ . For A is ...
Página 11
... distance BC describe Produce DB to meet the Oce CGH in G. With centre D and distance DG describe o GKL . Post . 3 . Produce DA to meet the Oce GKL in L. Then will AL = BC . For B is the centre of CGH , .. BC = BG . Def . 13 . And D is ...
... distance BC describe Produce DB to meet the Oce CGH in G. With centre D and distance DG describe o GKL . Post . 3 . Produce DA to meet the Oce GKL in L. Then will AL = BC . For B is the centre of CGH , .. BC = BG . Def . 13 . And D is ...
Página 12
... distance AE describe EFH , cutting AB in F. Then will AF = CD . For .. AF - AE . But AE = CD ; A is the centre of O EFH , I. 2 . .. AF = CD . Thus from AB a part AF has been cut off = CD . EXERCISES . Ax . 1 . Q. E. F. 1. Shew that if ...
... distance AE describe EFH , cutting AB in F. Then will AF = CD . For .. AF - AE . But AE = CD ; A is the centre of O EFH , I. 2 . .. AF = CD . Thus from AB a part AF has been cut off = CD . EXERCISES . Ax . 1 . Q. E. F. 1. Shew that if ...
Página 23
... distance CD describe a cutting AB in E and F. Bisect EF in O , and join CE , CO , CF. Then CO shall be 1 to AB . I. 10 . For in as COE , COF , :: EO = FO , and CO is common , and CE = CF , .. 4 COE = △ COF ; .. CO is to AB . I. c . Def ...
... distance CD describe a cutting AB in E and F. Bisect EF in O , and join CE , CO , CF. Then CO shall be 1 to AB . I. 10 . For in as COE , COF , :: EO = FO , and CO is common , and CE = CF , .. 4 COE = △ COF ; .. CO is to AB . I. c . Def ...
Otras ediciones - Ver todas
Elements of Geometry, Containing Books I. to Vi.And Portions of Books Xi ... James Hamblin Smith,Euclides Sin vista previa disponible - 2022 |
Elements of Geometry, Containing Books I. to VI.and Portions of Books XI ... James Hamblin Smith,Euclides Sin vista previa disponible - 2018 |
Términos y frases comunes
AB=DE ABCD AC=DF angles equal angular points base BC BC=EF bisecting the angle centre chord circumference coincide describe diagonals diameter divided equal angles equiangular equilateral triangle equimultiples Eucl Euclid exterior angle given angle given circle given line given point given st given straight line greater than nD hypotenuse inscribed intersect isosceles triangle less Let ABC Let the st lines be drawn magnitudes middle points multiple opposite angles opposite sides parallelogram pentagon perpendicular polygon produced Prop prove Q. E. D. Ex Q. E. D. PROPOSITION quadrilateral radius ratio rectangle contained reflex angle rhombus right angles segment shew shewn straight line joining sum of sqq Take any pt tangent THEOREM together=two rt trapezium triangle ABC triangles are equal vertex vertical angle
Pasajes populares
Página 51 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Página 38 - 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. either the sides adjacent to the equal...
Página 178 - 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.
Página 46 - IF a straight line fall upon two parallel straight lines, it makes the alternate angles equal to one another; and the exterior angle equal to the interior and opposite upon...
Página 50 - 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 together equal to two right angles.
Página 104 - To draw a straight line through a given point parallel to a given straight line. Let A be the given point, and BC the given straight line ; it is required to draw a straight line through the point A, parallel to the straight hue BC.
Página 187 - To describe an isosceles triangle, having each of the angles at the base double of the third angle.
Página 89 - In every triangle, the square on the side subtending either of the acute angles, is less than the squares on the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the acute angle and the perpendicular let fall upon it from the opposite angle, Let ABC be any triangle, and the angle at B one of its acute angles, and upon BC, one of the sides containing it, let fall the perpendicular AD from the opposite angle.
Página 5 - 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.
Página 5 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.