Elements of the Geometry of Planes and Solids: With Four PlatesThe author, 1828 - 159 páginas |
Dentro del libro
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Página 14
... triangle ABC , will be the equilateral triangle required . Proof . The circumferences of the two circles BCD , and ACE , must cut one another , because the centre of the one lies in the circumference of the other , so that the circle ...
... triangle ABC , will be the equilateral triangle required . Proof . The circumferences of the two circles BCD , and ACE , must cut one another , because the centre of the one lies in the circumference of the other , so that the circle ...
Página 16
... ABC , and DEF , be two triangles ( figure 13 , ) having the side AB , in the one , equal to the side DE , in the ... triangle ABC , upon the triangle DEF , so that the point A , fall upon the point D , the line AB , upon the line DE ...
... ABC , and DEF , be two triangles ( figure 13 , ) having the side AB , in the one , equal to the side DE , in the ... triangle ABC , upon the triangle DEF , so that the point A , fall upon the point D , the line AB , upon the line DE ...
Página 17
... triangle are also equal . APPLICATION . Let ABC , ( fig . 14 , ) be an isosceles tri- angle , in which AB , is equal to AC ; then will the angle ABC , be equal to the angle ACB ; and when AB , and AC , are protracted on the other side ...
... triangle are also equal . APPLICATION . Let ABC , ( fig . 14 , ) be an isosceles tri- angle , in which AB , is equal to AC ; then will the angle ABC , be equal to the angle ACB ; and when AB , and AC , are protracted on the other side ...
Página 18
... ABC , and ACB , will be equal ; and these are the angles of the triangle , which are opposite to the equal sides . Therefore , in an isosceles triangle , the angles which the third side makes with the equal sides , are equal , and if ...
... ABC , and ACB , will be equal ; and these are the angles of the triangle , which are opposite to the equal sides . Therefore , in an isosceles triangle , the angles which the third side makes with the equal sides , are equal , and if ...
Página 19
... triangle . Demonstration . I. If ( fig . 15 , ) the point D , falls in the BA , then BD , would be equal to BA , the part equal to the whole , which is impossible . II . If the point D , falls within the triangle ABC ... triangle BAD , is ...
... triangle . Demonstration . I. If ( fig . 15 , ) the point D , falls in the BA , then BD , would be equal to BA , the part equal to the whole , which is impossible . II . If the point D , falls within the triangle ABC ... triangle BAD , is ...
Otras ediciones - Ver todas
Elements of the Geometry of Planes and Solids: With Four Plates Ferdinand Rudolph Hassler Vista de fragmentos - 1828 |
Elements of the Geometry of Planes and Solids: With Four Plates (Classic ... F. R. Hassler Sin vista previa disponible - 2018 |
Términos y frases comunes
ABCD angle equal angle G angles opposite angular point APPLIC base and altitude bisect centre chord circumference circumscribed circle common intersection cone Corol cutting line cylinder Demonstr describe determine diagonal diameter draw drawn equal angles equal base equal sides equiangular equilateral triangle four right angles frustum given angle given circle given lines given point given straight line given triangle gles greater inner angles inscribed join line BC opposite angles parallel planes parallelepiped parallelogram perpendicular plane angles Plane Geometry point of intersection prisms PROBLEM Proof proportional protracted pyramid quadrilateral figure radii radius ratio rectilineal figure regular poligon Scholium segment side AC similar similar triangles six right solid angle solid content sphere square subtended supposition surface tangent thence THEOREM third plane third side three plane three sides triangle ABC triangular vertex
Pasajes populares
Página 44 - IN right angled triangles, the rectilineal figure described upon the side opposite to the right angle, is equal to the similar and similarly described figures upon the sides containing the right angle...
Página 20 - If two triangles have the three sides of the one equal to the three sides of the other, each to each, the triangles are congruent.
Página 11 - 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 2 - BBOWN, of the said district, hath deposited in this office the title of a book, the right whereof he claims as author, in the words following, to wit : " Sertorius : or, the Roman Patriot.
Página 36 - 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 119 - If a solid angle be contained by three plane angles, any two of them are together greater than the third. Let the solid angle at A be contained by the three plane angles BAC, CAD, DAB : any two of them shall be together greater than the third.
Página 61 - UPON a given straight line to describe a segment of a circle containing an angle equal to a given rectilineal angle. Let AB be the given straight line, and...
Página 113 - If one of two parallel lines is perpendicular to a plane, the other is also perpendicular to the plane.
Página 29 - EBF, there are two angles in the one equal to two angles in the other, each to each ; and the side EF, which is opposite to one of the equal angles in each, is common to both ; therefore the other sides are equal ; (I.
Página 16 - E the centre of the circle, and join EA, EB. Then, because AF is equal to FB, and FE common to the two triangles AFE, BFE, there are two sides in the one, equal to two sides in the other, and the base EA is equal to the base EB; therefore the angle AFE is equal...