 | University of St. Andrews - 1891 - 440 páginas
...without a circle two straight lines be drawn, one of which cuts the circle and the other meets it, and if the rectangle contained by the secant and the part of it without the circle be equal to the square on the line which meets the circle, that line shall be a tangent. Describe a... | |
 | London univ - 1874 - 778 páginas
...the circle and the other meets it; if the rectangle contained by the whole line which cuts the circle and the part of it without the circle is equal to the square of the line which meets the circle, this line shall touch the circle. 10. In a given circle inscribe... | |
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BC, contained by the whole of the cutting line, and the part of it without the circle, is equal to the square of BD which meets it ; therefore the straight line BD touches the circle ACD : (in. 
