على الاستقامة ‘(motion) in a straight line’
Arabic
| References: | Alm. MS Tunis: I.1:17, f. 2r:21 | 
|---|---|
| Translation of: | |
| Greek: | εὐθεία (κίνησις) [Alm. Heiberg: I.1, 7:15] | 
| Synonyms: | |
| على استقامة | [Plan. Hyp.: II.3] | 
| من حرکة استقامة | [Alm. MS Leiden: I.1:17, f. 3r:9] | 
