a |
b |
b |
c |
a |
c |
a |
b |
b |
c |
a |
c |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
c |
b |
0 |
a |
b |
b |
c |
a |
c |
b |
0 |
a |
b |
b |
c |
a |
b |
a |
b |
a |
2a |
b |
b |
a |
2a |
b |
b |
a |
b |
a |
b |
a |
b |
a |
b |
3 |
3 |
π |
2 |
OM |
ON |
a |
b |
c |
a |
b |
c |
0 |
a |
b |
2 |
2 |
| ||
2 |
EM |
FN |
PC |
BC |
PB |
CB |
a |
3i |
j |
k |
b |
i |
j |
k |
a |
b |
A.-15 | B.-5 | C.-3 | D.-1 |
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