OP |
OA |
AB |
AC |
A.内心 | B.重心 | C.垂心 | D.外心 |
OP |
OA |
AB |
AC |
AP |
| ||
|
|
| ||
|
|
|
| ||
sinC |
|
| ||
sinB |
AB |
AC |
AP |
AB |
AC |
AB |
AC |
BC |
a |
3 |
b |
a |
b |
a |
b |
cos(
| ||
cos(π-α) |
a |
b |
a |
b |
a |
b |
a |
b |
A.-5 | B.5 | C.7 | D.-1 |
c |
d |
c |
d |
A.-
| B.
| C.
| D.-
|
a |
b |
a |
b |
AB |
DC |
AB |
AD |
GA |
GB |
CG |
AB |
CA |
a |
b |
m |
2 |
a |
b |
λ |
m |
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