There are 6 shapes on a 10x10 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 (5, 7)
Distance from target shape to green rectangle at (1, 2): 9
Distance from target shape to yellow square at (2, 3): 7
Distance from target shape to brown right_triangle at (0, 0): 12
Distance from target shape to orange square at (7, 5): 4
Distance from target shape to blue square at (3, 0): 9
Closest shape is the orange square at (7, 5) with distance 4</think>

<answer>(7, 5)</answer>