This slideshow helps introduce geometric proofs. It gives key elements and types of reasons then gives several different types of proofs. Toward the end of the slideshow- the two column proof's statements and reasons are scrambled and the students are responsible for unscrambling the proof. There are also some fill in the blank for students to complete.
8. QUIZ What is always the first step of a proof? Name 5 key elements of a proof. Name 5 types of reasons one can use during a proof. Measures __________: Angles and Segments are ______________. What is the last statement in a proof?
9. Statements Reasons 1. 2. 3. 4. 5. 6. 7. 8. 9. 1. 2. 3. 4. 5. 6. 7. 8. 9. Given Definitions of Angle Bisector Definitions of Congruent Angles Given Substitution Property Angle Addition Postulate Substitution Property Simplify Definition of Right Angle
13. Statements Reasons Converse of the Consecutive Interior Angles Theorem Given Perpendicular Transversal Theorem Given Definition of Supplementary Angles