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EF |
DA |
EM |
BC |
EF |
DA |
EM |
BC |
A、greater than 1(大于1) |
B、equal to 1(等于1) |
C、less than 1(小于1) |
D、variable depending on the position of E(不能確定,與E的位置有關(guān)) |
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In Fig.2,In the Rt△ABC,∠ACB=900,∠A=300,CD is the bisector to
∠ACB,MD is the perpendicular to BA and MD through the midpoint of segment AB,thrn ∠CDM= .(英語小詞典:bisector:平分線;perpendicular:垂線;midpoint:中點)
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Suppose that in Fig.2,the length of side of square ABCD is 1,E and F are mid-points of CD and AD respectively ,BE and CF intersect at a point P.Then the length of line segment CP is __________.
(英漢詞典:figure(縮寫Fig.)圖;length 長度;square 正方形;mid-point中點;intersect 相交;line segment 線段)
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