• ### definite integral

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• ### definite integral as a sum of areas

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• ### lesson 4 horizontal line

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• ### Copy of Lesson No.4 horizontal line

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• ### slope of a line

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• ### Lsesson 2 distance formula

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• ### coordinate of a point

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• ### coordinate of a point

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• ### Lesson No.1 coordinate points dynamically understanding

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• ### Lesson No.5 verification of a point on a line

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• ### Lesson No.7the concept of two intercepts form dynamically

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• ### Lesson No.6 the role of b in equation of a line

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• ### Lesson No14 Mid point formula Process

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• ### distance formula throughprocess and validation

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• ### LESSON 5A

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• ### Lesson No19 Function Behavior

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• ### Lesson No18 Line Parralel to a fixed line

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• ### Lesson No.18 find perpendicular line to a given line

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• ### Lesson No.17point of intersection and concurrency

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• ### Lesson No15 Ratio formulaArithmetization

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• ### Lesson No.16 Ratio formula Process arithmetization

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• ### Lesson No13 Mid Point and Centroid

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• ### LessonNo12 analysis of circle

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• 