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GRE数学真题
ABCD is a square. Points E and F, not shown, are the midpoints of BC and CD resp...
Question 3
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ABCD is a square. Points E and F, not shown, are the midpoints of BC and CD respectively. Line segments are drawn to connect points E and F to A. Which of the following
must
be true?Indicate
all
possible values.
A.∠ CEF = 45˚
B.∠ FEA > 45˚
C.∠ EFA < 90˚
D.∠ FAD = 30˚
E.∠ AEB = 60˚
F.∠ AFD = 45˚
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