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问答题
In isosceles triangle ABC what is the value of∠C? (1) The measure of∠B is 47. (2) The measure of∠A is 96.
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解析：
若∠B=47，不知∠C为顶角或为底角，故不能确定；若∠A=96，且三角形内角和小于180，故可以确定∠C=47，故本题选B项。
若∠B=47，不知∠C为顶角或为底角，故不能确定；若∠A=96，且三角形内角和小于180，故可以确定∠C=47，故本题选B项。
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