1. Honors Geometry
Intro to Proof

2. Honors Geometry What does it mean to “prove” something?
Work with your elbow partner to come up with a working definition. Be prepared to share!

3. Honors Geometry
“Prove” – to establish the truth or validity of by evidence or demonstration

4. Honors Geometry
“Prove” – to establish the truth or validity of by evidence or demonstration
“Proof” – the process of or an instance of establishing the validity of a statement especially by derivation from other statements in accordance with accepted or stipulated principles of reasoning

5. Honors Geometry Two-Column proof deductive reasoning
General to specific
Prove statements by reasoning from postulates, definitions, theorems, and given information
Also Paragraph proof and Flowchart proof coming soon!

6. Honors Geometry
Reason (-ing): Statement offered in explanation or justification

7. Honors Geometry
Reason (-ing): Statement offered in explanation or justification
Valid: Conclusion correctly derived from premises

8. Honors Geometry
Reason (-ing): Statement offered in explanation or justification
Valid: Conclusion correctly derived from premises
Derive (d, -ation): a sequence of statements showing that a result is a necessary consequence of previously accepted statements