The idea of point is an abstraction that distills our understanding of the concept of location. Math explained in easy language plus puzzles games quizzes worksheets and a forum. Point together with line is a basic concept of elementary geometry.
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Points usually have a name often a letter like A or even W. In modern mathematics a point refers usually to an element of some set called a space. An Inflection Point is where a curve changes from Concave upward to Concave downward or vice versa So what is concave upward downward. For function mathfmath that.