| AB |
| S△BOD |
| S△BOC |
| OA2-AH2 |
| OH2+DH2 |
| 9+(x-4)2 |
| S△BOD |
| S△BOC |
| OD |
| OC |
| ||
| 5 |
| OD2-OH2 |
| 7 |
| 7 |
| 7 |
| 7 |
| 1 |
| 2 |
| 5 |
| 4 |
| 15 |
| 4 |
| 7 |
| 7 |
| 15 |
| 4 |
| 7 |
| 1 |
| 2 |
| 1 |
| 2 |
| OA2-AH2 |
| 52-42 |
| OH2+DH2 |
| 9+(x-4)2 |
| S△BOD |
| S△BOC |
| OD |
| OC |
| ||
| 5 |
| ||
| 5 |
| 7 |
| 4 |
| OD2-OH2 |
| 42-32 |
| 7 |
| 7 |
| 7 |
|
| 7 |
| 1 |
| 2 |
| 1 |
| 2 |
| 7 |
| 3 |
| 2 |
| 7 |
| 5 |
| 4 |
| 15 |
| 8 |
| 7 |
| 15 |
| 4 |
| 7 |
| 7 |
| 15 |
| 4 |
| 7 |
| 15 |
| 4 |
| 7 |
| 15 |
| 4 |
| 7 |
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