Triangles are congruent if and only if their corresponding parts are congruent.
Example! Triangle QRS QR=GH 5x-11=2x+8 3x-11=8 3x=19 x-19/3
triangle GHJ; find x and GH QR=5x-11 GH=2x+8 GH=2(19/3) +3 =38/3+24/8 GH= 62/3
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