a |
b |
a |
b |
a |
a |
b |
b |
a |
5 |
b |
5 |
| ||||
|
|
4 |
5 |
a |
a |
b |
a |
a |
b |
a |
b |
a |
a |
b |
4+81 |
85 |
a |
b |
a |
b |
a |
b |
a |
a |
b |
a |
b |
A.
| B.
| C.
| D.
|
a |
b |
a |
b |
3 |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
A.45° | B.60° | C.135° | D.120° |
a |
b |
a |
b |
b |
a |
b |
A.30° | B.60° | C.150° | D.120° |
a |
b |
c |
a |
b |
c |
0 |
a |
b |
2 |
c |
a |
b |
A.
| B.
| C.
| D.-
|
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