Q. 54.8( 8 Votes )

# <span lang="EN-US

Answer :

ABCD is cyclic quadrilateral.

ABC +ADC = 180°

92° +ADC = 180°

ADC = 88°

AE || CD

EAD =ADC = 88°

Now,

BCD = 180° - ∠DAB

⇒ ∠BCD = ∠DAF =
EAD +EAF

BCD = 88° + 20°

BCD = 108°

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