There are 2 shapes on a 9x9 grid. Which shape is closest to the pink 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: pink right_triangle at (8, 1)
Distance from target shape to red trapezoid at (3, 2): 6
Closest shape is the red trapezoid at (3, 2) with distance 6</think>

<answer>(3, 2)</answer>