Line Perpendicular to Two Intersecting Lines

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If a line is perpendicular to each of two intersecting noncollinear lines at their point of intersection, then the line is perpendicular to the plane determined by them.

External Links

Point (Wolfram MathWorld)
Line (Wolfram MathWorld)
Perpendicular (Wolfram MathWorld)
Plane (Wolfram MathWorld)

Permanent Citation

Heather Byrne
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​"Line Perpendicular to Two Intersecting Lines"​
​http://demonstrations.wolfram.com/LinePerpendicularToTwoIntersectingLines/​
​Wolfram Demonstrations Project​
​Published: December 13, 2010