The predicted perimeter for 5 triangles is 20 units.
The table on the left shows the number of triangles and the total perimeter for the following pattern:
| Triangles | Perimeter |
| 1 | 12 |
| 2 | 14 |
We can use this table to predict the perimeter for 5 triangles by extrapolating the data.
| Triangles | Perimeter |
| 1 | 12 |
| 2 | 14 |
| 3 | 16 |
| 4 | 18 |
| 5 | 20 |
Therefore, the predicted perimeter for 5 triangles is 20 units.
The table on the right shows the number of triangles and the total perimeter for a different pattern. It is not the same pattern as the one in the image.