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Geometric Proofs... The 'Two­Column Proof'
Key Terms (in your notes)...
STATEMENT
JUSTIFICATION
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Example #1: In , GI bisects
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3
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p. 29
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Pull for
Lesson
Notes
The first solu
formal two­co
1.4. Emphasi
be skipped or
must be prov
emphasize th
can be used The second s
presentation justification, a
commentary.
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Homework...
p. 72: #4-6
p. 78: #2, 8, 10, 12, 20
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