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एक से अधिक उत्तर प्रकार के प्रश्न

In the given figure, BF, BD and CE, CD are the exterior angle bisectors of ∠B and ∠C respectively, BE and CF are the interior angle bisectors of ∠B and ∠C respectively. If α + θ = 130° and ∠B – ∠C = 20°, then which of the following option(s) is/are correct?

दिए गए चित्र में BF, BD तथा CE, CD क्रमशः ∠B व ∠C के बाह्य कोण समद्विभाजक हैं, BECF क्रमशः ∠B व ∠C के अन्तः कोण समद्विभाजक हैं। यदि α + θ = 130° तथा ∠B – ∠C = 20°, तब निम्न में से कौनसा/कौनसे विकल्प सही है/हैं?


A
β = 20°
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B
γ = θ – δ
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C
θ = α + β + γ
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D
C=14(A+B)
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Solution

The correct option is C θ = α + β + γ

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