1.) two angles are complementary if they add up to 90°. show that if angles 1 and 2 are complementary, and angles 2 and 3 are complementary, then angle 1 = angle 3.

2.)if angles 1 and 3 are equal, and angles 4 and 6 are equal, and angles 1 and 4 are equal, show that angles 2 & 5 must be equal.

how could i do this. i will attach a picture as well. extra points and