AC |
1 |
3 |
AB |
10 |
3 |
7 |
3 |
10 |
3 |
7 |
3 |
AB |
AC |
AC |
1 |
3 |
AB |
1 |
3 |
2 |
3 |
2 |
3 |
10 |
3 |
7 |
3 |
10 |
3 |
7 |
,3 |
a |
AB |
AB |
DC |
A.矩形 | B.菱形 | C.正方形 | D.平行四边形 |
BD |
DC |
EA |
CE |
FB |
AF |
AD |
BE |
CF |
BC |
A.同向平行 | B.反向平行 |
C.互相垂直 | D.既不垂直也不平行 |
AB |
BC |
AB |
DC |
a |
b |
c |
a |
b |
a |
c |
b |
c |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
a |
b |
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