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In the adjoining figure, it is given that ∠A = 60°, CE || BA and ∠ECD = 65° then ∠ ACB = _______ .
  • a)
    60°
  • b)
    55°
  • c)
    70°
  • d)
    90°
Correct answer is 'B'. Can you explain this answer?
Most Upvoted Answer
In the adjoining figure, it is given that ∠A = 60°, CE || BA a...
AngleBAC=angleACE....(alt interior angle)


So,


Angle ACE=65 dgree
Angle ACB+ angleACE + angle ECD= 180 degree....(linear pair)


Angle ACB+65 degree + 60 degree=180 dgree



Angle BCA=(180-125) degree


Angle BCA=55 degree (Ans).
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Community Answer
In the adjoining figure, it is given that ∠A = 60°, CE || BA a...
Yaa its 55 because given thatCE||AB and we know that corresponding angles r equal when a yransversal falls on 2 parallel lines so angle ecd is equal to angle abc...angle abc is equal to 65 and now from angle sum property angle acb is 55 hope u got it
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