Answer:
1. The correct option is c.
2. The correct option is c.
Step-by-step explanation:
1.
From the given figure it is noticed that the angle 6 and angle 7 are lie on a straight line. It means angle 6 and 7 are supplementary angles.
The sum of supplementary angles is 180 degree.
Therefore option c is correct.
2.
If two lines intersect each other, then the vertically opposite angles are same.
From the given figure it is noticed that the angle 1 and 3 are vertically opposite angles, therefore measure of both angles are equal.
The value of x is 6.
The measure of angle 3 is
Therefore option c is correct.