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प्रश्न
Find the measure of ∠A in the following figure.
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उत्तर
∠ACD = ∠ABC + ∠CAB ...[Exterior angle property]
⇒ 115° = 65° + ∠CAB
⇒ ∠CAB = 115° – 65° = 50°
Thus, ∠A = 50°
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