Answer:
Scaling factor is 2 for triangle ABC to triangle A'B'C'.
Explanation:
Given : Side of triangle ABC is 5 inch and side of triangle A'B'C' is 10 inch.
We have to Determine the scale factor for triangle ABC to triangle A'B'C'.
Scaling factor is a number that is multiplied by the original value to find the dilation of the figure. If scaling factor is less than 1 then figure decreases from its original size and if scaling factor is greater than 1 then figure increases from its original size.
Scaling factor =

Given Side of triangle ABC is 5 inch and side of triangle A'B'C' is 10 inch
Scaling factor =

Thus, Scaling factor is 2 for triangle ABC to triangle A'B'C'.