1092 is what percent of 1140

180°

Step-by-step explanation:

If A equals 135°, then be equals 45° because the angle of A is congruent to the supplementary (which means when this angle and that angle equal 180°) of B. Also, C has the same measurement as A because they are congruent (I'm sorry if this does not make much sense, I'm trying my best). So B minus C would be the same as 45° minus 135°. Since they are in the absolute value sign, it means it will always be positive and not negative. So the answer is 2 times 90°. Which is 180°. I hope this helps!