In ΔABC,the measure of ∠ACD is 105∘. If ∠B=65∘,then find ∠A.
A
35∘
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B
30∘
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C
40∘
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D
50∘
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Solution
The correct option is C40∘ The exterior angle property states that the exterior angle of a triangle is equal to the sum of its opposite interior angles.