# Chord Equation

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Tangent lines are drawn from a given external point to a circle. The equation is found by joining their points of contact

### Keywords

geometry, circle, tangent lines, geometry example, circle geometry, chord equation, circle chord, circle chord equation, circle geometry example### Galleries

Analytical Geometry### Source

William Briggs, G.H. Bryan *The Elements of Coordinate Geomentry Part 1. The Equations and Properties of the right line and circle* (, : University Correspondence College Press Warehouse, ) 153

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