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Write a two column proof for the following

If PQ is congruent to QS and QS is congruent to ST, then PQ equals ST.
10/15/2013 | Kayla from Old Bridge, NJ | 1 Answer | 0 Votes
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1 Answer

Statement         |          Reason

1) PQ is con-         1) given

gruent to QS

2) QS is con-         2) given

gruent to ST

3) PQ is con-         3) Chain Rule 

gruent to ST

10/15/2013 | Muhammad C.

Comments

I would say another term used for "Chain Rule" would be "Transitive Property of Congruence".
10/18/2013 | Jason S.
They are essentially the same except one is used more for logic proofs instead of geometry proofs. 
10/19/2013 | Muhammad C.