4= let 1st angle = x so the 2nd angle = 180 - x (because they are supplementary) 1st angle = 2 times of 2nd angle x = 2(180 - x) x = 360 - 2x x + 2x = 360 3x = 360 x = 360/3 x = 120
so, the 1st angle = x = 120 degrees and the 2nd angle = 180 - x = 180 - 120 = 60 degrees
Supplementary angles are two angles that add up to 180°. 180÷3=60. 60*2=120. 120+60=160. m∠A=60° and m∠B=120°.
This question is talking about vertical angles. One of the angles is 127°, so the one opposite to it is also 127° (look up vertical angles if you don't understand). I don't know how to find the other two angles though.
