Name a pair of supplementary angles Solution1 1 120 3 120

Solution

1)

1 =120
3 = 120 ( why? because this an angle made by same set of lines)

5.

2=13
4 = 13( made by the same lines)

6.

3 =110
2 = 180-110 = 70
As they both make up 180

7.

4 = 65
1 = 180-65 = 115
AS they are on the same linesegment
and add upto 180