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 (3, 6)
Distance from target shape to green rectangle at (1, 2): 6
Distance from target shape to red rectangle at (0, 3): 6
Distance from target shape to yellow trapezoid at (0, 1): 8
Distance from target shape to purple right_triangle at (5, 1): 7
Distance from target shape to pink rectangle at (0, 9): 6
Closest shape is the green rectangle at (1, 2) with distance 6</think>

<answer>(1, 2)</answer>