To identify a line of reflection that would flip a polygon onto itself, we need to consider the symmetry of the polygon.
- x = n represents a vertical line at \( x = n \).
- y = -t represents a horizontal line at \( y = -t \).
- y = -r represents a horizontal line at \( y = -r \).
- Oy =0 represents the x-axis (which is the line \( y = 0 \)).
Without seeing the actual diagram of the polygon, a common line of reflection for many polygons (like rectangles, squares, or regular polygons) is the x-axis (Oy = 0), especially if the polygon is symmetric about the x-axis.
If you can provide additional information about the symmetry of the polygon or its vertices, I would be able to confirm the best line of reflection. In many cases, the x-axis tends to be a good choice if the polygon is symmetrical around it.