Question

Help me??? i dont understand..

Answer 1

78

Step-by-step explanation: The angle of a straight line is 180 so you should

minus 180 by 102 which equals 78.

Answer 2

m2 will be 78 because sum of angles in a strt line is 180 hence if m1 is 102 then m2 will be (180-102) i.e.78