To say that the sum of two squares is equal to a third square meant that the two squares could be cut up and reassembled to form a square identical to the third square.
Upang sabihin na ang kabuuan ng dalawang squares ay katumbas ng isang third square sinadya na ang dalawang squares ay maaaring putulin ng reassembled at sa form ng isang parisukat na magkapareho sa ikatlong square.