PA |
PB |
PC |
0 |
S1 |
S |
S2 |
S |
S△BPC |
S |
1 |
2 |
S1+S2 |
S |
1 |
2 |
1 |
2 |
1 |
2 |
S1S2 |
1 |
4 |
1 |
16 |
PB |
PC |
PD |
PO |
PA |
PA |
1 |
2 |
PB |
1 |
2 |
PC |
0 |
PA |
PB |
PC |
0 |
1 |
2 |
5 |
2 |
5 |
2 |
BA |
CB |
CD |
A.
| B.
| C.
| D.
|
OA |
a |
OB |
b |
OC |
c |
MN |
A.
| B.-
| ||||||||||||||||||||||||
C.
| D.
|
AB |
1 |
2 |
BD |
BC |
A.
| B.
| C.
| D.
|
OA |
a |
OB |
b |
OC |
c |
MN |
PA |
PB |
PC |
AB |
AC |
AP |
A.2 | B.3 | C.4 | D.5 |
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