If a line (AB) be divided into two parts (at C), the square on the sum the whole line (AB) and either segment (BC) is equal to four times the rectangle contained by the whole line (AB) and that segment, together with the square on the other segment (AC).
If a line (AB) be divided into two parts (at C), the square on the sum the whole line (AB) and either segment (BC) is equal to four times the rectangle contained by the whole line (AB) and that segment, together with the square on the other segment (AC).