a |
c |
a |
a |
c |
a |
a |
c |
a |
c |
a |
c |
a |
a |
c |
a |
a |
c |
25 |
3 |
a |
c |
a |
c |
(-2)2+42 |
5 |
a |
32+42 |
| ||||||
|
|
-2×3+4×4 | ||
5×2
|
| ||
5 |
OA |
OB |
OM |
PA |
PB |
OP |
OA |
OP |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
e |
e |
a |
e |
e |
b |
e |
e |
A.30° | B.60° | C.120° | D.150° |
a |
b |
2 |
a |
b |
a |
a |
b |
A.30° | B.45° | C.60° | D.75° |
AC |
BC |
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