Angle Bisector for an Angle Subtended by a Tangent Line
Angle Bisector for an Angle Subtended by a Tangent Line
Let a circle be internally tangent to another circle at the point A. Draw a tangent line through a point C on the inner circle and let D and B be its points of intersection with the outer circle. Then AC bisects DAB.
∠
Drag the orange point to change the figure.
External Links
External Links
Permanent Citation
Permanent Citation
Jay Warendorff
"Angle Bisector for an Angle Subtended by a Tangent Line"
http://demonstrations.wolfram.com/AngleBisectorForAnAngleSubtendedByATangentLine/
Wolfram Demonstrations Project
Published: March 7, 2011