How to construct (draw) tangents to a circle through an external point - Math Open Reference
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This page shows how to draw the two possible tangents to a given circle through an external point with compass and straightedge or ruler. This construction assumes you are already familiar with constructing the perpendicular bisector of a line segment.
![](https://mathinabox.com/wp-content/uploads/2020/05/Circles-and-their-Tangents.jpg)
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