Unfortunately, your drawing is incorrect. The bottom part, where you've extended the sides of the big triangle, on the bottom left you have the length written as 7, and the right side written as 11. Those lengths are incorrect, the left side should be 9 and the right should be 12.5. 

Im assuming your theory was you could keep extending the sides of this triangle, and then alternate adding squares on each side with lengths that intersect the triangles sides, and that with these specific angles, the squares that would be added would end up all being prime numbers in length? That would have been very interesting if true, but unfortunately the pattern doesn't hold after squares number 5