There are 5 shapes on a 8x8 grid. Which shape is closest to the cyan right_triangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: cyan right_triangle at (0, 6)
Distance from target shape to yellow trapezoid at (7, 6): 7
Distance from target shape to orange square at (2, 6): 2
Distance from target shape to brown trapezoid at (5, 2): 9
Distance from target shape to blue rectangle at (7, 0): 13
Closest shape is the orange square at (2, 6) with distance 2</think>

<answer>(2, 6)</answer>