Answer:
5
Explanation:
Similar triangles are triangles which have the same shape but not the same size. This means their angle measures are equal but their side lengths are not instead they are proportional. To solve, we will set up a proportion and solve.
The distance and the side lengths are proportional by the same scale factor. The factor is found by writing a fraction of the distance of the image divide by the original.
The image is 10 from the original and the original is 2 from the center of dilation. The scale factor will be 10/2 = 5.