|
 | I-protractor iyithuluzi elisetshenziselwa ukukala ama-engeli. |
| Kungenzeka ukuthi uwasebenzisile ekilasini lezibalo. |
| Ama-engeli akalwa ngamadigri. Embuthanweni ogcwele amadigri angama-360. |
| Amaprotractor amaningi anomumo oyindilinga owenziwe ngepulasitiki… |
| …futhi ingafinyelela ku-180 degrees. |
| Kodwa-ke, kungenzeka ukuthenga ama-protractor afinyelela kumadigri angama-360 agcwele. |
| Ekuthuthukiseni, ama-protractors angatholakala njengengxenye yamathuluzi amaningana, okuhlanganisa: |
| - Amasethi ayizikwele ahlanganisiwe
|
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| - Ama-protractors nama-deep gauges
|
| - Ama-Digital protractors (kanye nama-goniometers)
|
