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B
600
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C
1450
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D
1200
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Solution
The correct option is C1450 Given that, AB ||CD ||EF and KL||HG.
Produce LK and GH as shown below: ∵AB||CDandHK is transversal ∴∠1=∠DHK=250 (Alternate angles) ∠3=∠CHG=600 (Corresponding angles)
and ∠3=∠4 (Corresponding angles)
= 600
But ∠4+∠5=1800 (Linear pair) ⇒600+∠5=1800 ⇒∠5=1800−600=1200 ∴∠HKL=∠1+∠5
= 250+1200=1450