Question

Set up an equation and find the value for y that makes a || b in the diagram below. State the theorem or postulate proves that the lines must be parallel

Answer 1

The equation is y - 10 = 100. And that's because of the theorem or postulate. It's actually a converse on one. It says that if a transversal cuts 2 lines and creates congruent corresponding angles, then the lines are parallel. I don't know what theorem or postulate number that would be, but in words that's it. Btw, y = 110.