Elements of Geometry: Containing the First Six Books of Euclid: With a Supplement ... to which are Added, Elements of Plane and Sphericale Trigonometry ... From the Last London Ed., EnlJ.B. Lippincott & Company, 1866 - 317 Seiten |
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Seite 61
... touch a circle , when it meets the cir- cle , and being produced does not cut it . And that line which has but one point in common with the circumference , is called a tangent , and the point in com- mon , the point of contact . 2 ...
... touch a circle , when it meets the cir- cle , and being produced does not cut it . And that line which has but one point in common with the circumference , is called a tangent , and the point in com- mon , the point of contact . 2 ...
Seite 65
... touch one another internally , they cannot have the same centre Let the two circles ABC , CDE , touch one another internally in the point C ; they have not the same centre . For , if they have , let it be F ; join FC , and draw any ...
... touch one another internally , they cannot have the same centre Let the two circles ABC , CDE , touch one another internally in the point C ; they have not the same centre . For , if they have , let it be F ; join FC , and draw any ...
Seite 68
... touch each other internally , the straight line which joins then centres being produced , will pass through the point of contact . Let the two circles ABC , ADE , touch each other internally in the point A , and let F be the centre of ...
... touch each other internally , the straight line which joins then centres being produced , will pass through the point of contact . Let the two circles ABC , ADE , touch each other internally in the point A , and let F be the centre of ...
Seite 69
... touch each other externally , the straight line which joins they ' centres will pass through the point of contact . Let the two circles ABC , ADE , touch each other externally in the point A ; and let F be the centre of the circle ABC ...
... touch each other externally , the straight line which joins they ' centres will pass through the point of contact . Let the two circles ABC , ADE , touch each other externally in the point A ; and let F be the centre of the circle ABC ...
Seite 70
... touch another in the inside in more points than one . A Nor can two circles touch one another on the outside in more than one point : For , if it be possible , let the circle ACK touch the circle ABC in the points A , C , and join AC ...
... touch another in the inside in more points than one . A Nor can two circles touch one another on the outside in more than one point : For , if it be possible , let the circle ACK touch the circle ABC in the points A , C , and join 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 spherical angle spherical triangle square straight line BC THEOR third touches the circle triangle ABC triangle DEF wherefore