Question

In the figure, show that AB is parallel to CD​

Answer 1

Step-by-step explanation:

AB is parallel to CD because if the lines are extended towards the left or right side they will never intersect each other

Answer 2

Answer:

In this question;

Angle 1 = 130°

Now Angle 1+ Angle 2 = 180° ( Linear pair)

130° + Angle 2 = 180°

Angle 2 = 50°

Now Angle2 = Angle 3= 50°

Angle 2 and Angle 3 can be equal only if the line AB||CD.

Hence Proved