题目内容
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 segme
nt AB，thrn ∠CDM= .(英语小词典：bisector：平分线；perpendicular：垂线；midpoint：中点)
15
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16、In Fig．，In the Rt△ABC，∠ACB=90°，∠A=30°，CD is the bisector to∠ACB，MD is the perpendicular to BA and MD through the midpoint of segment AB，then∠CDM=
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，GE and CF intersect at a point P．Then the length of line segment CP is
In fig 1，ABCD is a quadrilsteral，E is a point the diagonal BD，EF∥AD，EM∥BC，then the value of | EF |
| DA |
| EM |
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（英汉词典：fig figure的缩写，图；quadrilateral四边形；diagonal对角线；value数值；variable变量；to depend on取决于；position位置）
四边形ABCD中，E是对角线BD上一点，EF∥AD，EM∥BC，则
| 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（不能确定，与E的位置有关） |
