Question

please solve this question ​

Answer 1

Answer:

I don't know what is answer click pictures clear

Answer 2

Answer:

Yes , In figure I) the two dotted lines are together forming 180degree

In figure ii) the two dotted lines are forming alternate angles which is possible in parallel lines only

in figure 3 alternate angles are formed

in figure 4 the two angles 60 and 120 if we add these two angles we get 180 degree means linear pair