There are 6 shapes on a 10x10 grid. Which shape is closest to the green trapezoid in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: green trapezoid at (6, 7)
Distance from target shape to yellow right_triangle at (7, 5): 3
Distance from target shape to blue square at (1, 0): 12
Distance from target shape to cyan right_triangle at (6, 9): 2
Distance from target shape to pink right_triangle at (3, 2): 8
Distance from target shape to purple right_triangle at (0, 9): 8
Closest shape is the cyan right_triangle at (6, 9) with distance 2</think>

<answer>(6, 9)</answer>