How to find the scale factor of two triangles using the sides?

In a column proof the right column states your reasons

Sasha delivers newspapers to subscribers that live within a 4 block radius of her house. sasha's house is located at point (0, -1). points a, b, c, d, and e represent the houses of some of the subscribers to the newspaper. to which houses does sasha deliver newspapers?

35 ! insert < , > , or = to make the sentence true. 12 __ 25 > =