Plane Geometry 6-1: Proposition, Truth Value of a Proposition, Negation of a Proposition

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This video is about the definitions of Proposition, Truth value of a Proposition, and Negation of a Proposition.

In the previous video (Plane Geometry 5), we used "Proof by Contradiction" to prove Theorem 2. This video and the next two videos (Plane Geometry 6-2, Plane Geometry 6-3) are to help understand the basics of Logic so that the fourth video, Plane Geometry 6-4, where we learn the idea of "Proof by Contradiction" makes more sense to the students. Hope that it will!