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IGD: Perpendicular Lines

Grade:
9-12
Standards:
Geometry
Math Content:
Geometry

Two lines are perpendicular if they meet at right angles.

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  • The two lines in the applet below are perpendicular.
  • You can drag points A, B, or P to change the lines, but notice that the angle formed by the lines will always measure 90°.

How Do You Construct Perpendicular Lines?  

What Are Some Applications of Perpendicular Lines?  

IGDConstructingAPerpendicular
Geometry

IGD: Constructing a Perpendicular Line

9-12
Use this tool to show how to construct a perpendicular line from a point on a line.
IGDDroppingAPerpendicular
Geometry

IGD: Dropping a Perpendicular Line

9-12
Use this applet to show how to drop a perpendicular from a point onto a line.
IGDPerpendicularBisector
Geometry

IGD: Perpendicular Bisector

9-12
Use this tool to demonstrate how to draw a perpendicular bisector.