There are 3 shapes on a 9x9 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 (6, 0)
Distance from target shape to purple trapezoid at (7, 0): 1
Distance from target shape to cyan rectangle at (0, 3): 9
Closest shape is the purple trapezoid at (7, 0) with distance 1</think>

<answer>(7, 0)</answer>