Construction of Tangents to a circle
- Hannah Ingham, Sanjay Gulati
This applet shows how to construct tangents to a circle from a point outside the circle. Drag the "step" point on the slider to the left so you are on step 1. Drag the slider to the right to see the steps for constructing a tangent line.
Describe what happens to tangent segments AP and AQ as you drag the external point, A, closer to the circle.