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Chapter 2: Parallelism and Conditinal Statements

When a conditional statement is combined with its converse, then a biconditional statement is formed. A biconditional is written as p if and only if q or p«q. The biconditional statement is true only if its conditional statement and converse statement are true.

When both p and q are negated in a conditional statement, a new statement called inverse statement is formed and is written as ~p®~q. When both p and q are negated in a converse statement, a new statement called contrapositive statement is formed and is written as ~q®~p.

These are deeper relationships between geometric figures. You don't necessarily have to memorize these relationships, but you have to know them well. They will help you both in the chapters late on and in your lives.   Please take a few minutes break and click here to continue to the next chapter. (You can also click on the drop-down list below to jump to any chapter you like.)

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