There are 6 shapes on a 10x10 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 (1, 7)
Distance from target shape to blue right_triangle at (7, 5): 8
Distance from target shape to cyan square at (4, 3): 7
Distance from target shape to pink right_triangle at (3, 3): 6
Distance from target shape to brown trapezoid at (7, 3): 10
Distance from target shape to purple right_triangle at (9, 1): 14
Closest shape is the pink right_triangle at (3, 3) with distance 6</think>

<answer>(3, 3)</answer>