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" IF a straight line be drawn parallel to one of the sides of a triangle, it shall cut the other sides, or those produced, proportionally ; and if the sides, or the sides produced, be cut proportionally, the straight line which joins the points of section... "
The figures of Euclid with the enunciations, as printed in Euclid's Elements ... - Page 54
by Euclides - 1840
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University of St. Andrews - 1896
...the weight supported is 17 Ib. 12. To find the position of the centre of gravity of a plane triangle. If a straight line be drawn parallel to one of the sides of a triangle so as to cut off one-fourth of its area, find the centre of gravity of the quadrilateral remaining....
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