hit hint consider 4 levels of the triangles count the triangles from each four levels now managed each level like right left to plus three right left 4:03 right left 1 + 2 + 3 right left 2 + 3 + 4 right and left 1 + 2 + 3 + 4 right levels and get the number of add an old tree together to get a total number of triangle
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Answer:
hit hint consider 4 levels of the triangles count the triangles from each four levels now managed each level like right left to plus three right left 4:03 right left 1 + 2 + 3 right left 2 + 3 + 4 right and left 1 + 2 + 3 + 4 right levels and get the number of add an old tree together to get a total number of triangle