12. Formal Proofs

For 9/12/13 class day:

12.  FORMAL PROOF
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LO:  SWBAT apply and use deductive reasoning, postulates and properties to prove geometrical statements using formal proofs
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Today is about proofs using geometric concepts.  We will be looking at several examples and then it's your turn. 

 Here are two examples:

Now it's your turn.  Try to fill in the blanks in these two proofs.
If  you do not finish in class, this becomes homework.