Answer:
Yes; 1:1.2
Step-by-step explanation:
To find if the polygons are similar we must see if all sides are multiplied by the same amount. 30/25=1.2 42/35=1.2 24/20=1.2. This proves the polygons are similar by SSS. The scale factor is how much you multiply the values by to get the other values. To write it as a ratio you start with this, 1:x. x is how much you multiply it by. In other words, 20*x=24. Simple algebra gives us 1.2. The scale factor as a ratio is 1:1.2
