Prove the following statement by proving its contrapositive. Begin by writing what is given and what is to be proved.
If then .
Hence proved that if then .
If the given statement is ‘’If p then q’’, the contrapositive is ‘’If not q then not p’’.
The given statement is if then .
The contrapositive of the given statement is if then .
Since the sum of all angles of a quadrilateral is 360, therefore following will hold from the given figure as:
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