OH I just got it! Its the vertical angles congruency theorem for both. Yep got it.
Now does anyone know what to write under reasons for the given?
Given: <1 is congruent to <2
Prove: <3 is congruent to <4
3+1 is top right 2 is bottom right 3 is bottom left 4 is top left.
Its a four step proof, including given and the last statement where you prove it.
1. <1=<2 Given
Yeah its easy but i hate proofs with a passion. If I met the guy who made proofs...