There are 6 shapes on a 9x9 grid. Which shape is closest to the orange 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: orange right_triangle at (4, 8)
Distance from target shape to blue square at (3, 5): 4
Distance from target shape to gray square at (4, 2): 6
Distance from target shape to red square at (8, 6): 6
Distance from target shape to green trapezoid at (7, 5): 6
Distance from target shape to cyan right_triangle at (5, 6): 3
Closest shape is the cyan right_triangle at (5, 6) with distance 3</think>

<answer>(5, 6)</answer>