AB |
a |
AE |
b |
CD |
A.
| B.
| C.
| D.
|
CD |
1 |
2 |
BE |
1 |
2 |
AE |
AB |
1 |
2 |
b |
a |
AB |
BC |
CA |
AB |
AC |
BD |
CD |
OA |
OD |
AD |
NQ |
QP |
MN |
MP |
0 |
A.1 | B.2 | C.3 | D.4 |
AB |
i |
AD |
j |
DE |
A.
| B.-
| C.
| D.-
|
AB |
CD |
0 |
AB |
BC |
A.菱形 | B.直角梯形 | C.矩形 | D.等腰梯形 |
OP |
OA |
OB |
BP |
PA |
BP |
PA |
OA |
OB |
OA |
OB |
OP |
AB |
AB |
BC |
CD |
DA |
0 |
a |
b |
c |
a |
b |
b |
c |
c |
a |
a |
b |
c |
a |
b |
c |
OP |
OA |
OB |
OC |
A.3 | B.2 | C.1 | D.0 |
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