MB |
MC |
MB |
MC |
MA) |
A.正三角形 | B.直角三角形 |
C.等腰三角形 | D.等腰直角三角形 |
MB |
MC |
MB |
MC |
MA) |
CB |
MB |
MA |
MC |
MA |
CB |
AB |
AC |
AB |
AC |
BC |
AC |
AB |
2 |
2 |
AB |
BC |
πx |
4 |
π |
2 |
OB |
OC |
OA |
A.-8 | B.-4 | C.4 | D.8 |
a |
x |
2 |
x |
2 |
π |
4 |
b |
2 |
x |
2 |
π |
4 |
x |
2 |
π |
4 |
a |
b |
a |
b |
a |
b |
1 |
2 |
a |
b |
A1A3 |
A3A5 |
A.
| B.-
| C.
| D.-
|
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