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 TrigonometryLippincott, Grambo & Company, 1854 - 317 σελίδες |
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Σελίδα 8
... extremities of a line are points ; and the intersections " of one line with another are also points . " 3. " If two lines are such that they cannot coincide in any two points , with- " out coinciding altogether , each of them is called ...
... extremities of a line are points ; and the intersections " of one line with another are also points . " 3. " If two lines are such that they cannot coincide in any two points , with- " out coinciding altogether , each of them is called ...
Σελίδα 15
... extremity of the base equal to one another , and likewise those which are terminated in the other extremity , equal to one another . Let there be two triangles ACB , ADB , upon the same base AB , and upon the same side of it , which ...
... extremity of the base equal to one another , and likewise those which are terminated in the other extremity , equal to one another . Let there be two triangles ACB , ADB , upon the same base AB , and upon the same side of it , which ...
Σελίδα 16
... extremity equal to one another . PROP . VIII . THEOR . If two triangles have two sides of the one equal to two sides of the other each to each , and have likewise their bases equal ; the angle which is contain ed by the two sides of the ...
... extremity equal to one another . PROP . VIII . THEOR . If two triangles have two sides of the one equal to two sides of the other each to each , and have likewise their bases equal ; the angle which is contain ed by the two sides of the ...
Σελίδα 17
... extremity of the base equal to one another , and like- wise their sides terminated in the other extremity ; but this is impossible ( 7. 1. ) ; therefore , if the base BC coincides with the base EF , the sides BA , AC cannot but coincide ...
... extremity of the base equal to one another , and like- wise their sides terminated in the other extremity ; but this is impossible ( 7. 1. ) ; therefore , if the base BC coincides with the base EF , the sides BA , AC cannot but coincide ...
Σελίδα 32
... extremities of two equal and parallel straight lines , towards the same parts , are also themselves equal and parallel . Let AB , CD , be equal and parallel straight lines , and joined towards the same parts by the straight lines AC ...
... extremities of two equal and parallel straight lines , towards the same parts , are also themselves equal and parallel . Let AB , CD , be equal and parallel straight lines , and joined towards the same parts by the straight lines AC ...
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ABC is equal ABCD adjacent angles altitude angle ABC angle ACB angle BAC base BC bisected centre chord circle ABC circumference cosine cylinder demonstrated described diameter divided draw equal and similar equal angles equiangular equilateral equilateral polygon equimultiples Euclid exterior angle fore four right angles given rectilineal given straight line greater Hence hypotenuse inscribed join less Let ABC Let the straight magnitudes meet multiple opposite angle parallel parallelogram parallelopiped perpendicular polygon prism PROB PROP proportional proposition quadrilateral radius ratio rectangle contained rectilineal figure remaining angle right angled triangle SCHOLIUM segment semicircle shewn side BC sine solid angle solid parallelopiped spherical angle spherical triangle square straight line BC THEOR touches the circle triangle ABC triangle DEF wherefore