Warm up. Identify the Property 1 . AB CD given CD AB __________________ 2 . AB = CD given AB + BC = CD + BC __________________ 3 . B C and C D given B D __________________. Plan of reasoning to complete geometric proofs
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Identify the Property
1. AB CD given
CD AB __________________
2. AB = CD given
AB + BC = CD + BC __________________
3. B C and C D given
B D __________________
What is given, what can be assumed from the diagram?
What conclusions can be made from each given statement?
What reason can you give to justify each conclusion?
What order can you prove these conclusions?
e) How can you arrive at what you are asked to prove?
2.4 Building a System of Geometry KnowledgeSection 2-4 continued Proofs
2.4 Building a System of Geometry Knowledge