Answer:
No, the new sign is not similar to the original.
Explanation:
Shapes are similar when each pair of corresponding sides in the two shapes have the same scale factor.
The scale factor is found when you divide a side on one shape with the corresponding side on the other shape.
Use a mock situation:
A rectangle is 6 X 8.
The new rectangle, added 6 to each side, is 12 X 14.
See if the scale factor is the same.
12 ÷ 6 = 2
14 ÷ 8 = 1.75
Since the scale factors, which determine how much a shape grows or shrinks, are not the same, the new sign would not be similar.