A triangle is rotated 35 degrees about the origin. What is true about the relationship between the image and the pre-image?

Question

anonymous · Answer

1- The lengths of the sides and the measures of the angles are preserved, so the triangles are congruent. 
2- The lengths of the sides are enlarged and measures of the angles are preserved, so the triangles are similar. 
3- The lengths of the sides change and the measures of the angles change as well, so the triangles look nothing alike. 
4- The lengths of the sides are reduced and measures of the angles preserved, so one triangle is a reduction of another.

anonymous · Answer

I am thinking it is number 2??? Don't know though.