Answer:
The scale factor is 2.
The scale factor is the ratio of the lengths of corresponding sides in two similar figures. In this case, the corresponding sides are the legs of the two triangles. The length of the leg in Figure 1 is 2 units, and the length of the leg in Figure 2 is 4 units. Therefore, the scale factor is 4/2 = 2.
Another way to find the scale factor is to divide the length of a side in Figure 2 by the length of the corresponding side in Figure 1. In this case, we would divide 4 by 2, which also gives us 2.
Therefore, the scale factor used to produce Figure 1 from Figure 2 is 2.