Question

ans if you know the answers
otherwise you will be reported​

Answer 1

Step-by-step explanation:

if angle 1 is 60 then

180-60= 60 ----------------- ( -1 )eq

(as<1 and <3 are on straight line they are equal to 180°)

acc. to alternative interior angles <1=<2=60°

same we had done in 1st eq

180-60= 60