No. XXX.—THE UNIQUE TRIANGLE
The figures to be transposed in triangle A are 9 and 3 and 7 and 1.
A
| 5 | ||||||
| 4 | 6 | |||||
| 3 | 7 | |||||
| 2 | 1 | 9 | 8 | |||
B
| 5 | ||||||
| 4 | 6 | |||||
| 9 | 1 | |||||
| 2 | 7 | 3 | 8 | |||
Then in triangle B, the sum of the side is in each case 20, and the sums of the squares of the numbers along the sides is in each case 126.