There are 2 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 (9, 7)
Distance from target shape to gray right_triangle at (7, 3): 6
Closest shape is the gray right_triangle at (7, 3) with distance 6</think>

<answer>(7, 3)</answer>