Geometry help!?

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What geometric postulate justifies the statement?
If AB is congruent to CD and CD is congruent to EF, then AB is congruent to EF.

Thanks!

2007-10-22 04:38:34 · 2 answers · asked by Kracker 2 in Science & Mathematics ➔ Mathematics

The transitive property or the Substitution Axiom

2007-10-22 04:45:11 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋

AB ≅ CD (given)

add EF on both sides

AB + EF ≅ CD + EF

AB + CD ≅ CD + EF (since it is given that CD ≅ EF)

subtract CD from both sides

AB ≅ EF

2007-10-22 04:55:31 · answer #2 · answered by mohanrao d 7 · 0⤊ 0⤋