Tangent Chord Angle


	The angle formed by a tangent to a circle and a chord is equal to half the angle measure of the intercepted arc.


	Contributed by: Jay Warendorff

Chord (Wolfram MathWorld)

Circle Tangent Line (Wolfram MathWorld)

"Tangent Chord Angle" from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/TangentChordAngle/

Contributed by: Jay Warendorff

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

Browse all topics

Tangent Circles
Inscribed Angles That Intercept the Same Arc
Angle Bisector Theorem
The Perpendicular Bisector of a Chord
Equally Distant Chords
Tangents to a Circle
Intersecting Chords Theorem
Division of the Opposite Side by an Angle Bisector
Inscribed and Central Angles in a Circle
Opposite Angles of a Quadrilateral in a Circle

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