This is a free lesson from our course in Geometry

 This lesson defines and explains the concepts of a statement, truth value, negation, postulate and theorem. This might seem complicated here in text, but once you have instructor explain it, will be easy for you to understand. You should remember that the main idea behind logical reasoning is to use the information and preconditions to make a conclusion. You'll also learn about conditionals. Conditionals are 'if-then' statements. More precisely, conditionals are statements that say if one thing happens, another will follow. The content, explanations and including practice problems with solution can be learnt with the help of video audio presentation in own hand writing by the instructor and several examples. (More text below video...)
Other useful lessons:
 Conditionals Converse, Inverse, Biconditional and Contrapositive Inductive and Deductive Reasoning Disproving Statements
 (Continued from above) You’ll explore in the lessons hereafter, the topics like - difference between inductive and deductive reasoning, the statements (conditionals, converse, inverse and biconditional to determine truth value of each statement), the study of relationships especially between the concepts of congruence and similarity using both the inductive and deductive methods of reasoning. The emphasis is on problem solving and practical applications combined with the algebraic concepts. The learning from this will enable you to solve the practical math related problems and apply successfully in geometry-related real-world problems.

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