How to determine the contrapositive of a conditional statement

The video tutorial introduces the concept of contrapositive in logic, explaining it as a combination of converse and inverse. The teacher uses P&Q to illustrate that the contrapositive is 'not Q then not P'. The lesson applies this concept to vertical angles, demonstrating that if angles are not vertical, then they are not congruent. The session concludes with a recap of the key points discussed.

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