ABCD is a trapezium in which AB || DC and DC is perpendicular to BC. If ∠DAB = 110°, then ∠ABC - ∠ADC =_____.

ABCD is a trapezium in which AB || DC and DC is perpendicular to BC. I

1.	ABCD is a trapezium in which AB \|\| DC and DC is perpendicular to BC. If ∠DAB = 110°, then ∠ABC - ∠ADC =_____.
A.	18°
B.	16°
C.	20°
D.	220
Answer» D. 220

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ABCD is a trapezium in which AB || DC and DC is perpendicular to BC. If ∠DAB = 110°, then ∠ABC - ∠ADC =_____.

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