There are 6 shapes on a 3x3 grid. Which shape is closest to the red 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: red right_triangle at (2, 0)
Distance from target shape to gray trapezoid at (0, 2): 4
Distance from target shape to cyan rectangle at (1, 1): 2
Distance from target shape to brown right_triangle at (1, 0): 1
Distance from target shape to pink rectangle at (1, 2): 3
Distance from target shape to orange square at (0, 0): 2
Closest shape is the brown right_triangle at (1, 0) with distance 1</think>

<answer>(1, 0)</answer>