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I know this is super late but thank you so much for your help bob!
I have nothing against the proof. Just the definitions you quoted.
Ok.
Hi Bob
hi Stefy,
Hi Bob
hi all,
If p exists then the lines are not parallel (definition of parallel)
Hi TARAJS;
ok i need to use IG axioms.
Proof by contradiction:
If there exists a unique point p sch that p lies on both l and m, then l and m are distinct, non parallel lines. 