Q. 174.3( 23 Votes )

# In Fig., lines AB

Answer :

It is given: AOC + BOE = 70o

And, BOD = 40o

Now, according to the question,

AOC + BOE + COE = 180o (Sum of linear pair is always 180o )

70o + COE = 180o

COE = 110o ...........(1)

And,

COE + BOD + BOE = 180o(Sum of linear pair is always 180o )

putting the value of COE, we get,

110o + 40o + BOE = 180o

150o + BOE = 180o

BOE = 30o

Now, reflex COE = 360o - COE

reflex COE = 360o - 110o

reflex COE = 250o

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