Book 5
25
But AB is greater than CD; therefore GB is also greater than HD.
25
And, since AG is equal to E, and CH to F, therefore AG, F are equal to CH, E.
25
And if, GB, HD being unequal, and GB greater, AG, F be added to GB and CH, E be added to HD, it follows that AB, F are greater than CD, E.
25
Therefore etc. Q. E. D.
