Question: If two triangles are similar and the length of a side in the first triangle is 6 cm while the corresponding side in the second triangle is 9 cm, what is the scale factor from the first triangle to the second?

Options:

1. 2:3
2. 3:2
3. 1:1.5
4. 1.5:1

Correct Answer: 2:3

Solution:

The scale factor is the ratio of the lengths of corresponding sides. Therefore, the scale factor is 6:9, which simplifies to 2:3.