Question

Please HELP I"LL FAN AND MEDAL!! Please No One has helped me at all with this one!

Lines g, h, and l are parallel and m 1 = 55°.



What is m 12?



VHS_PA_S1_07_L303_Q5.gif



A.


125°


B.


55°


C.


135°


D.


45°

Answer 1

m angle 1= m angle 12 ( vertically opposite angles)
so mangle 12= 55 degrees
hence option B is the correct answer.

Answer 2

ok

Answer 3

Because the horiz. lines are all parallel, and the fourth line intersects all 3 of these parallel lines, I think it safe to say that the measure of angle 1 is the same as the measure of angle 9. From that point on I agree with dpasingh.