Here is a picture of an older version of the flag of Great Britain. There is a rigid transformation that takes Triangle 1 to Triangle 2, another that takes Triangle 1 to Triangle 3, and another that takes Triangle 1 to Triangle 4.

1. What is true about the lengths of the sides in Triangles 1 and 2?

o The side lengths are the same.

o The side lengths are different.

o The side lengths are scaled.

(see image below)