Reply To: learning to write

You must be good in mathematics. A square of has for every 1 on the side 1 2/5 (square root of 2) in its diagonal. Tosfas in Sukkah (8,1), kol amseh, explains that it is inaccurate. 5 in the side would have 5 times the square root of two, 5 times 1 2/5, 7, according to the above, in its diagonal but the area of the inner square (rombus) of 5 times the square root of 2 is one half of 100 or 50 (the area of a half of square of 10) and not 7 squared 49.