Posted by **kaitlin** on Sunday, January 23, 2011 at 5:52pm.

how do you exolain logic with converse, inverse, and contrapositive.

- geometry -
**Damon**, Sunday, January 23, 2011 at 6:04pm
I think a cow is a mammal:

If a cow then a mammal (hypothesis, assume true)

If a mammal then a cow (converse, maybe)

If not a cow, then not a mammal (inverse, maybe)

If not a mammal, then not a cow (contrapositive, true)

Draw a Venn diagram for all this

cow inside mammal circle

then area between circles is not a cow but could be a mammal (converse, inverse)

then area outside cow circle still might be a mammal.

If it is outside both circles it is the contrapositive, not a cow or any mammal.

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