Lines l and m are parallel.
Use the diagram to determine the measure of ∠3.

∠3 is 70°

Step-by-step explanation:

∠1 is 50° since it is across from another 50° angle

and then you use the equation x+25+2x+50=180 to find x

x then equals 35°

you then use the alternate interior angle theorem to say that ∠3 is 2x, or 70°

were is the equation

answer: 1, 3 and 5 are correct

step-by-step explanation: