2-4 Deductive Reasoning
Deductive reasoning entails drawing logical conclusions from given statements or facts. This involves applying the Law of Detachment and Law of Syllogism to deduce new information based on established truths. Through examples and visuals, explore how these principles guide reasoning processes and lead to valid conclusions.
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Presentation Transcript
Deductive Reasoning (logical reasoning): the process of reasoning logically from given statements or facts to a conclusion
Problem 1: Using the Law of Detachment What can you conclude from the given true statement? If a student gets an A on a final exam, then the student will pass the course. Felicia got an A on her history final exam.
What can you conclude from the given true statement? If a ray divides an angle into two congruent angles, then the ray is an angle bisector. ?? ??????? < ??? ?? ? ?? < ??? < ???
Law of Syllogism: allows you to state a conclusion from two true conditional statements when the conclusion of one statement is the hypothesis of the other statement
Problem 2: Using the Law of Syllogism What can you conclude from the given information If a figure is a square, then the figure is a rectangle. If a figure is a rectangle, then the figure has four sides.
What can you conclude from the given information If you do gymnastics, then you are flexible. If you do ballet, then you are flexible
Problem 3: Using the Laws of Syllogism and Detachment What can you conclude from the given information If you live in Accra, then you live in Ghana. If you live in Ghana, then you live in Africa. Alisa lives in Accra.
