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Lines and Linear Equations Sequences Collinearity Slope Slope and Hotlink Intercepts Transforming Lines Area/Perimeter Formulas Similar Triangles & Line Equations Sum of Angles in a Regular Polygon Parallels and Perpendiculars Slopes and Perpendiculars Special Shapes Equation of the line through 1 point with given gradient Equation of a Line through 2 points Reflections on Parabolas Focus on Ellipses Slopes of Tangents An Isosceles Triangle Theorem Advanced Geometry Napoleon’s Theorem Paucellier’s Linkage 4 Bar Linkage Cubic Spline Graphing Aspects of 2D-graphics with the ClassPad 300 Aspects of 3D-graphics with the ClassPad 300