Why didn't Euclid make his 5th postulate: corresponding angles with respect to parallel lines are equal? - Quora
Euclid's Parallel Postulate
Chapter 4 Euclidean Geometry - Fairmont State 4 Euclidean Geometry Based on previous 15 axioms, The parallel postulate for Euclidean geometry is added in this ... Euclid’s Fifth - [PDF Document]
Solved Proculus's Axiom states that if I and l' are parallel | Chegg.com
MATH335 Content - Converse of AIA is equivalent to EPP - YouTube
EUCLIDEAN PARALLEL POSTULATE
Equivalents to Euclid`s Postulate V
Parallel postulate - Wikiwand
PDF) Euclid's Fifth Postulate and Convergence of Non-Parallel Straight Lines