Analyze the premise "All dogs are mammals."
This is a Venn Diagram describing dogs and mammals.
What do the four regions mean?
Since region 2 corresponds to the
premise "All dogs are mammals,"
All dogs which are not mammals.
All dogs which are mammals.
All mammals which are not dogs.
Everthing that is not a dog or a mammal
is outside of both circles.
then region 1
should be shaded.
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