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Constructing the Normal Through a Point in GeoGebra

You can use GeoGebra to construct a normal through a point.

GeoGebra Instruction 1

Open Graphics View under GeoGebra icon View in GeoGebra icon Menu.
Click on Perpendicular Line GeoGebra icon by first clicking tool number 4, then tool number 1 in the drop-down list.
Click the point you want to draw the normal from.
Click the line you want to draw the normal to.

Screenshot of GeoGebra showing how to draw a perpendicular from a point to a line

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