There are 2 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 (9, 6)
Distance from target shape to yellow trapezoid at (1, 8): 10
Closest shape is the yellow trapezoid at (1, 8) with distance 10</think>

<answer>(1, 8)</answer>