【GMAT考满分数据洞察DS题库】All four vertices of quadrilateral ABCD lie on _真题_答案

题目内容

All four vertices of quadrilateral ABCD lie on a circle. What is the measure of ∠BAD?

(1) AC = CD

(2) $∠ ADC$ = $70 °$

AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
DEACH statement ALONE is sufficient.
EStatements (1) and (2) TOGETHER are not sufficient.

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正确答案: E

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