Question

help?

Answer 1

angle1 congruentangle3 or angle2 congruentangle4 or mangle1 + mangle4 = 180° or mangle2 + mangle3 = 180° I know this the answer but I need explaining

Answer 2

any explaining would help

Answer 3

let me see if I can explain :D its old for me now ^_^

Answer 4

ok thnx :)

Answer 5

alright, When parallel lines get crossed by another line (which is called a Transversal), you can see that many angles are the same.
its a rule that vertical angles are the equal
in the same way corresponding angles, alternate interior and exterior angles are equal.
and we also know that sum of consective interior angles is 180 thats all by geometry laws.
so to check that two lines are parallel we check all this conditions :)

Answer 6

thankyou soooo much :)