Tangents to a Circle


	Tangents from a point outside a circle are congruent. Use the slider or drag the orange point to change the figure.


	Contributed by: Jay Warendorff

Circle Tangent Line (Wolfram MathWorld)

"Tangents to a Circle" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/TangentsToACircle/

Contributed by: Jay Warendorff

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Euclid's Elements
Plane Geometry
High School Geometry
High School Mathematics

Browse all topics

Tangent Circles
Tangent Chord Angle
Inscribed and Central Angles in a Circle
Opposite Angles of a Quadrilateral in a Circle
The Eyeball Theorem
Equally Distant Chords
Inscribed Angles That Intercept the Same Arc
The Chordal Theorem
The Perpendicular Bisector of a Chord
Intersecting Chords Theorem

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