Also, on your block 26, the 8 triangular pieces which form the section you will join to Template 1, do not turn out to match Template 5 (a 3 1/2") square.
The 8 triangular pieces when joined, will be a 2 1/2 inch square, which will join up to your (Template 1) "2 1/2" square.
Just trying to help -- hope this is clear. :)