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| перпендикулярность | |||
| отвесность | |||
| ортогональность | |||
| вертикальность | |||
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perpendicularity : 18 phrases in 12 subjects |
| Cartography | 1 |
| Construction | 2 |
| Drawing | 1 |
| Mathematics | 1 |
| Mechanics | 1 |
| Nautical | 4 |
| Navigation | 1 |
| Non-destructive testing | 3 |
| Physics | 1 |
| Shipbuilding | 1 |
| Technology | 1 |
| Transport | 1 |