1.

ABCD is a cyclic quadrilateral in which:(i) BC || AD, ∠ADC = 110° and ∠BAC = 50°. Find ∠DAC.(ii) ∠DBC = 80° and ∠BAC = 40°. Find ∠BCD.(iii) ∠BCD = 100° and ∠ABD = 70° find ∠ADB.

Answer» ABCD is a cyclic quadrilateral in which:



(i) BC || AD, ∠ADC = 110° and ∠BAC = 50°. Find ∠DAC.



(ii) ∠DBC = 80° and ∠BAC = 40°. Find ∠BCD.



(iii) ∠BCD = 100° and ∠ABD = 70° find ∠ADB.


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