Question

in figure if line ab parallel line CF and line BC parallel line and prove that ABC + FDE = 180

Answer 1

SOLUTION:-

GIVEN BY:- line AB || line CF and line BC || line ED.
prove :- 
B || ED 
AB || CF 
then ,
∠ABC = ∠CDE °°°°°°°1
∠CDE= ∠FDE °°°°°°°°2
Here,
FROM 1 AND 2
ABC+FDE=180°
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