225. and. 20. giueth. 400. that is by addition. 625. whiche somme doeth amounte also, when. 25. is multiplied square.
The thirde figure hath. 15. also for the one side, whose square is. 225. and for the other side. 36. whiche maketh in square. 1296. And thei bothe together giue 1521. And so many commeth of 39 multiplied by it self in square.
Again for the fourthe figure. 21. maketh. 441. and 28. doeth yelde. 784. whiche bothe beyng added, doe amounte vnto. 1225. And so moche doeth there arise by. 35. multiplied into it self.
The fifte figure hath. 21. also, and his square is 441. and the second side beyng. 72. maketh in square 5184. So that bothe tose squares doe make. 5625. And the like nomber is made by. 75. multiplied in square forme.
Now in the sixt figure 27 beyng multiplied square bryngeth forthe. 729. And. 36. likewaies multiplied doeth make. 1296. and that with the other will make by addition. 2025. whiche somme (as is well seen) doeth come of the multiplication of. 45. by it self.
In the seuenth figure. 27. multiplied square, doeth giue. 729: and the other side (whiche is. 120.) doeth bryng forthe. 14400. These bothe ioyned together doe make. 15129. And the like somme is gathered by the multiplication of. 123. squarely.
So that all those figures doe appere true.
But how thei maie agree with your former rule, I can not see.
Master. That rule did I make for nōbers vncompounde. For nombers compounde haue not onely in their owne name, the vse of that rule, but also thei folowe the forme of those nombers, of whiche thei bee compounde.
So. 9. beyng compounde of. 3. foloweth the formeof
