If a straight line be cut into equal and unequal segments, the rectangle contained by the unequal segments of the whole together with the square on the straight line between the points of section is equal to the square on the half.
As 'n reguit lyn in gelyke en ongelyke segmente gesny word, die reghoek vervat deur die ongelyke segmente van die hele saam met die vierkant op die reguit lyn tussen die punte van die artikel is gelyk aan die vierkant op die helfte.