All the angle measures in the sign are 90. b. you increase each side length by 6 inches. is the new sign similar to the original

No, the new sign is not similar to the original.

Step-by-step 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.

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step-by-step explanation: