Proposition: Prop. 11.17: Straight Lines cut in Same Ratio by Parallel Planes
(Proposition 17 from Book 11 of Euclid's “Elements”)
If two straight lines are cut by parallel planes then they will be cut in the same ratios.
Modern Formulation
(not yet contributed)
Table of Contents
Proofs: 1
Mentioned in:
Proofs: 1
Thank you to the contributors under CC BYSA 4.0!
 Github:

 nonGithub:
 @Fitzpatrick
References
Adapted from (subject to copyright, with kind permission)
 Fitzpatrick, Richard: Euclid's "Elements of Geometry"
Adapted from CC BYSA 3.0 Sources:
 Prime.mover and others: "Pr∞fWiki", https://proofwiki.org/wiki/Main_Page, 2016