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To find the area in T units in all of the parallelograms you can simply count the amount of equilateral T triangles in the shape. This however would take a long time so I realised that in a lot of the shapes there can fit a few of the same triangle just scale up by 4T. I called these triangles 't' (lowercase). I realised that if 1 edge has the length of 2, then the adjacent edge had the same length as it's amount of t. This also worked for the parallelograms that did not have an edge the length of 2 or could not fill its area precisely with t's. A 't' is really just 4 T's so I moved some of the T triangles (as shown in the middle picture) so that the they had an edge of 2. This meant to find the area I just had to count the amount of columns which would then be the amount of t. Times t by 4 and you get T.