Contrapositive
Switching the hypothesis and
conclusion of a conditional
statement and negating both. For example,
the
contrapositive of "If it is raining then the grass is wet" is "If
the grass is not wet then it is not raining."
Note: As in
the example, the contrapositive of any true proposition is also
true.
See
also
Converse, inverse of a conditional, biconditional
|