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Re: common core geometry proofs
Posted:
Jul 31, 2014 1:22 PM


We are trying to put together the proofs and had a question about standard G.C0.9. It says to prove "when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent."
What postulates can we use to prove these? Other than the lines being parallel, what else can we know is given?
Thank you! Michelle Riley Burnt HillsBallston Lake High School ******************************************************************* * To unsubscribe from this mailing list, email the message * "unsubscribe nyshsmath" to majordomo@mathforum.org * * Read prior posts and download attachments from the web archives at * http://mathforum.org/kb/forum.jspa?forumID=671 *******************************************************************



