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Question

In the given figure, AB || DC, ∠BAD = 90°, ∠CBD = 28° and ∠BCE = 65°. Then ∠ABD = ?
(a) 32°
(b) 37°
(c) 43°
(d) 53°

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Solution

Side DC of triangle BCD is produced to E.
BCE=CBD+BDC65°=28°+BDCBDC=37°
Now,
ABDC and BD is the transversal.
ABD=BDC=37° Alternate Interior AnglesABD=37°

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