Equation of a line: y-y1=m(x-x1)

Author:GeoGebra Institute of MEI, Tom Button

The line can be varied by dragging the point A and changing the gradient with the slider for m. B is a point on the line and dragging this creates a gradient triangle.

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Reflection across a line
Triangle with 3 Right Angles
အခြေခံ data အခေါ်အဝေါ်များ
bewijs stelling van Pythagoras
Reflection = 180° Rotation about a Line

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