# Right angled bisector

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- Mathguru

On the screen, let us first see two points A and B. A line segment AB is drawn in black color. Now we take a free point D on the plane and line segments AD and BD are drawn we also draw a perpendicular to line segment AB from point D in red color where foot of the perpendicular is point C. Now move the points A, B and D and observe how the lengths of AC, BC, AD and BD get changed.

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