We can summarize our discussion as follows:
  • A statement and its contrapositive are logically equivalent. They appear diametrically opposite each other in the diagram.
  • The converse and inverse are logically equivalent to each other. They also fall diametrically opposite each other (and in fact are really contrapositives of one another).
On the other hand, the original statement is not in general equivalent to either its converse or its inverse.     Next page
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