If a straight line be cut into equal and unequal segments, the squares on the unequal segments of the whole are double of the square on the half and of the square on the straight line between the points of section.
SI recta linea secetur in æqualia, & non æqualia: Quadrata, quæ ab inæqualibus totius segmentis fiunt, simul duplicia sunt & eius, quod à dimidia, & eius, quod ab intermedia sectionum fit, quadrati.