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 TrigonometryE. Duyckinck, and George Long, 1824 - 333 σελίδες |
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Σελίδα 74
... Circle and the Geometry of Solids ; to which are Added Elements of Plane and Spherical Trigonometry John Playfair ... touches it on the inside or outside . For , if it be possible , let the circle EBF touch the circle ABC in more points ...
... Circle and the Geometry of Solids ; to which are Added Elements of Plane and Spherical Trigonometry John Playfair ... touches it on the inside or outside . For , if it be possible , let the circle EBF touch the circle ABC in more points ...
Σελίδα 78
... circle , and therefore the straight line AG cuts the circle . COR . From this it is manifest , that the straight line which is drawn at right an- gles to the diameter of a circle from the extremity of it , touches the circle ; and ...
... circle , and therefore the straight line AG cuts the circle . COR . From this it is manifest , that the straight line which is drawn at right an- gles to the diameter of a circle from the extremity of it , touches the circle ; and ...
Σελίδα 79
... touching the circle . Let the straight line DE touch the circle ABC in the point C ; take the centre F , and draw the straight line FC : FC is perpendicular to DE . For , if it be not , from the point F draw FBG perpendicular to DE ...
... touching the circle . Let the straight line DE touch the circle ABC in the point C ; take the centre F , and draw the straight line FC : FC is perpendicular to DE . For , if it be not , from the point F draw FBG perpendicular to DE ...
Σελίδα 87
... Circle and the Geometry of Solids ; to which are Added Elements of Plane and Spherical Trigonometry John Playfair ... touches the circle , shall be equal to the angles in the alter- nate segments of the circle . Let the straight line EF ...
... Circle and the Geometry of Solids ; to which are Added Elements of Plane and Spherical Trigonometry John Playfair ... touches the circle , shall be equal to the angles in the alter- nate segments of the circle . Let the straight line EF ...
Σελίδα 88
... Circle and the Geometry of Solids ; to which are Added Elements of Plane and Spherical Trigonometry John Playfair ... touches the circle ; and because AB , drawn from the point of contact A , cuts the circle , the angle DAB is equal to ...
... Circle and the Geometry of Solids ; to which are Added Elements of Plane and Spherical Trigonometry John Playfair ... touches the circle ; and because AB , drawn from the point of contact A , cuts the circle , the angle DAB is equal to ...
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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 multiple opposite angle parallel parallelepipeds parallelogram perpendicular polygon prism PROB produced proportionals 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 parallelepipeds spherical angle spherical triangle straight line AC THEOR third touches the circle triangle ABC triangle DEF wherefore