Three blocks, called AAA, BBB and CCC exist in the image. A big black square is inside and touching block AAA. Block AAA contain a medium blue triangle and a medium black triangle. The medium black triangle is north of the big black square and is close to the medium blue triangle. Block BBB cover a small yellow square, a big blue triangle and a big black square. The big blue triangle is north of the big black square.
Where is the medium blue triangle regarding AAA?