Answer:
scale factors :
1. 3:2
2. 5:6
3. 6
Explanation:
the scale factor between to similar triangles or parallelograms is the ratio of the lengths of corresponding sides :
1. Triangles case :
The Side of length 8 in the first triangle corresponds to the side of length 12 in the second triangle
therefore ,the scale factor = 12:8 which simplifies to 3:2.
2. parallelograms case :
The Side of length 30 in the first parallelogram corresponds to the side of length 25 in the second.
therefore ,the scale factor = 25:30 which simplifies to 5:6.
3. Triangles case :
First triangle Second triangle
3 → 18
4 → 24
5 → 30
Therefore,
The scale factor = 18:3 = 24:4 = 30:5 = 6